Call to a member function getTag() on null (500 Whoops, looks like something went wrong.)

Exceptions 2

Error

in /www/htdocs/w017537f/liviagrupp.de/libraries/src/WebAsset/AssetItem/LangActiveAssetItem.php (line 46)

)
{
parent::__construct($name, $uri, $options, $attributes, $dependencies);
// Prepare Uri depend from the active language
$langTag = Factory::getApplication()->getLanguage()->getTag();
$client = $this->getOption('client');
// Create Uri <client>/language/<langTag>/<langTag>.css
if ($client)
{

LangActiveAssetItem->__construct('template.active.language', '', array('description' => 'An asset to allow language specific css, eg \'language/[lang-CODE]/[lang-CODE].css\', to use it as a dependency to the active template', 'type' => 'style', 'class' => 'LangActiveAssetItem', 'dependencies' => array('template.active'), 'assetSource' => array('registryFile' => 'templates/cassiopeia/joomla.asset.json')), array(), array()) in /www/htdocs/w017537f/liviagrupp.de/libraries/src/WebAsset/WebAssetRegistry.php (line 241)

if ($className && class_exists($nameSpace . '\\' . $className))
{
$className = $nameSpace . '\\' . $className;
return new $className($name, $uri, $options, $attributes, $dependencies);
}
return new WebAssetItem($name, $uri, $options, $attributes, $dependencies);
}

WebAssetRegistry->createAsset('template.active.language', '', array('description' => 'An asset to allow language specific css, eg \'language/[lang-CODE]/[lang-CODE].css\', to use it as a dependency to the active template', 'type' => 'style', 'class' => 'LangActiveAssetItem', 'dependencies' => array('template.active'), 'assetSource' => array('registryFile' => 'templates/cassiopeia/joomla.asset.json'))) in /www/htdocs/w017537f/liviagrupp.de/libraries/src/WebAsset/WebAssetRegistry.php (line 424)

if ($namespace && !\array_key_exists('namespace', $options))
{
$options['namespace'] = $namespace;
}
$assetItem = $this->createAsset($name, $uri, $options);
$this->add($item['type'], $assetItem);
}
}
/**

WebAssetRegistry->parseRegistryFile('templates/cassiopeia/joomla.asset.json') in /www/htdocs/w017537f/liviagrupp.de/libraries/src/WebAsset/WebAssetRegistry.php (line 347)

foreach ($this->dataFilesNew as $path)
{
// Parse only if the file was not parsed already
if (empty($this->dataFilesParsed[$path]))
{
$this->parseRegistryFile($path);
// Mark the file as parsed
$this->dataFilesParsed[$path] = $path;
}

WebAssetRegistry->parseRegistryFiles() in /www/htdocs/w017537f/liviagrupp.de/libraries/src/WebAsset/WebAssetRegistry.php (line 128)

* @since 4.0.0
*/
public function get(string $type, string $name): WebAssetItemInterface
{
// Check if any new file was added
$this->parseRegistryFiles();
if (empty($this->assets[$type][$name]))
{
throw new UnknownAssetException(sprintf('There is no "%s" asset of a "%s" type in the registry.', $name, $type));
}

WebAssetRegistry->get('style', 'theme.colors_standard') in /www/htdocs/w017537f/liviagrupp.de/libraries/src/WebAsset/WebAssetManager.php (line 277)

{
throw new InvalidActionException('WebAssetManager is locked, you came late');
}
// Check whether asset exists
$asset = $this->registry->get($type, $name);
if (empty($this->activeAssets[$type]))
{
$this->activeAssets[$type] = [];
}

WebAssetManager->useAsset('style', 'theme.colors_standard') in /www/htdocs/w017537f/liviagrupp.de/libraries/src/WebAsset/WebAssetManager.php (line 245)

if ($andUse)
{
$name = $arguments[0] instanceof WebAssetItemInterface ? $arguments[0]->getName() : $arguments[0];
return $this->registerAsset($type, ...$arguments)->useAsset($type, $name);
}
else
{
return $this->registerAsset($type, ...$arguments);
}

WebAssetManager->__call('registerandusestyle', array('theme.colors_standard', 'media/templates/site/cassiopeia/css/global/colors_standard.css')) in /www/htdocs/w017537f/liviagrupp.de/templates/cassiopeia/error.php (line 38)

$templatePath = 'media/templates/site/cassiopeia';
// Color Theme
$paramsColorName = $this->params->get('colorName', 'colors_standard');
$assetColorName = 'theme.' . $paramsColorName;
$wa->registerAndUseStyle($assetColorName, $templatePath . '/css/global/' . $paramsColorName . '.css');
// Use a font scheme if set in the template style options
$paramsFontScheme = $this->params->get('useFontScheme', false);
$fontStyles = '';

require('/www/htdocs/w017537f/liviagrupp.de/templates/cassiopeia/error.php') in /www/htdocs/w017537f/liviagrupp.de/libraries/src/Document/HtmlDocument.php (line 779)

// Store the file path
$this->_file = $directory . '/' . $filename;
// Get the file content
ob_start();
require $directory . '/' . $filename;
$contents = ob_get_contents();
ob_end_clean();
}
return $contents;

HtmlDocument->_loadTemplate('/www/htdocs/w017537f/liviagrupp.de/templates/cassiopeia', 'error.php') in /www/htdocs/w017537f/liviagrupp.de/libraries/src/Document/HtmlDocument.php (line 838)

$this->baseurl = Uri::base(true);
$this->params = $params['params'] ?? new Registry;
$this->template = $template;
// Load
$this->_template = $this->_loadTemplate($baseDir, $file);
return $this;
}
/**

HtmlDocument->_fetchTemplate(array('template' => 'cassiopeia_lg_cass_22', 'directory' => '/www/htdocs/w017537f/liviagrupp.de/templates', 'debug' => '1', 'csp_nonce' => null, 'templateInherits' => 'cassiopeia', 'params' => object(Registry), 'file' => 'error.php')) in /www/htdocs/w017537f/liviagrupp.de/libraries/src/Document/HtmlDocument.php (line 641)

*
* @since 1.7.0
*/
public function parse($params = array())
{
return $this->_fetchTemplate($params)->_parseTemplate();
}
/**
* Outputs the template to the browser.
*

HtmlDocument->parse(array('template' => 'cassiopeia_lg_cass_22', 'directory' => '/www/htdocs/w017537f/liviagrupp.de/templates', 'debug' => '1', 'csp_nonce' => null, 'templateInherits' => 'cassiopeia', 'params' => object(Registry), 'file' => 'error.php')) in /www/htdocs/w017537f/liviagrupp.de/libraries/src/Document/HtmlDocument.php (line 660)

{
$this->_caching = $caching;
if (empty($this->_template))
{
$this->parse($params);
}
if (\array_key_exists('csp_nonce', $params) && $params['csp_nonce'] !== null)
{
$this->cspNonce = $params['csp_nonce'];

HtmlDocument->render(false, array('template' => 'cassiopeia_lg_cass_22', 'directory' => '/www/htdocs/w017537f/liviagrupp.de/templates', 'debug' => '1', 'csp_nonce' => null, 'templateInherits' => 'cassiopeia', 'params' => object(Registry), 'file' => 'error.php')) in /www/htdocs/w017537f/liviagrupp.de/libraries/src/Document/ErrorDocument.php (line 140)

$this->debug = $params['debug'] ?? false;
$this->error = $this->_error;
$params['file'] = 'error.php';
return parent::render($cache, $params);
}
/**
* Render the backtrace
*

ErrorDocument->render(false, array('template' => 'cassiopeia_lg_cass_22', 'directory' => '/www/htdocs/w017537f/liviagrupp.de/templates', 'debug' => '1', 'csp_nonce' => null, 'templateInherits' => 'cassiopeia', 'params' => object(Registry), 'file' => 'error.php')) in /www/htdocs/w017537f/liviagrupp.de/libraries/src/Error/Renderer/HtmlRenderer.php (line 77)

'template' => $template->template,
'directory' => JPATH_THEMES,
'debug' => JDEBUG,
'csp_nonce' => $app->get('csp_nonce'),
'templateInherits' => $template->parent,
'params' => $template->params,
]
);
}
}

HtmlRenderer->render(object(RuntimeException)) in /www/htdocs/w017537f/liviagrupp.de/libraries/src/Exception/ExceptionHandler.php (line 131)

// Reset the document object in the factory, this gives us a clean slate and lets everything render properly
Factory::$document = $renderer->getDocument();
Factory::getApplication()->loadDocument(Factory::$document);
$data = $renderer->render($error);
// If nothing was rendered, just use the message from the Exception
if (empty($data))
{
$data = $error->getMessage();

ExceptionHandler::render(object(RuntimeException)) in /www/htdocs/w017537f/liviagrupp.de/libraries/src/Exception/ExceptionHandler.php (line 74)

* @since 3.10.0
*/
public static function handleException(\Throwable $error)
{
static::logException($error);
static::render($error);
}
/**
* Render the error page based on an exception.
*

ExceptionHandler::handleException(object(RuntimeException)) in /www/htdocs/w017537f/liviagrupp.de/libraries/src/Application/CMSApplication.php (line 311)

);
// Trigger the onError event.
$this->triggerEvent('onError', $event);
ExceptionHandler::handleException($event->getError());
}
// Trigger the onBeforeRespond event.
$this->getDispatcher()->dispatch('onBeforeRespond');

CMSApplication->execute() in /www/htdocs/w017537f/liviagrupp.de/includes/app.php (line 63)

// Set the application as global app
\Joomla\CMS\Factory::$application = $app;
// Execute the application.
$app->execute();

require_once('/www/htdocs/w017537f/liviagrupp.de/includes/app.php') in /www/htdocs/w017537f/liviagrupp.de/index.php (line 32)

* define() is used rather than "const" to not error for PHP 5.2 and lower
*/
define('_JEXEC', 1);
// Run the application - All executable code should be triggered through this file
require_once dirname(__FILE__) . '/includes/app.php';

RuntimeException

Failed to start the session because headers have already been sent by "/www/htdocs/w017537f/liviagrupp.de/libraries/vendor/joomla/input/src/Input.php" at line 42.

in /www/htdocs/w017537f/liviagrupp.de/libraries/vendor/joomla/session/src/Storage/NativeStorage.php (line 473)

throw new \RuntimeException('Failed to start the session: already started by PHP.');
}
if (ini_get('session.use_cookies') && headers_sent($file, $line))
{
throw new \RuntimeException(
sprintf('Failed to start the session because headers have already been sent by "%s" at line %d.', $file, $line)
);
}
if (!session_start())

NativeStorage->start() in /www/htdocs/w017537f/liviagrupp.de/libraries/src/Session/Storage/JoomlaStorage.php (line 305)

$this->setId($session_clean);
$cookie->set($session_name, '', time() - 3600);
}
}
parent::start();
// Try loading data from the session
if (isset($_SESSION['joomla']) && !empty($_SESSION['joomla']))
{
$this->data = unserialize(base64_decode($_SESSION['joomla']));

in /www/htdocs/w017537f/liviagrupp.de/libraries/vendor/joomla/session/src/Session.php -> start (line 406)

if ($this->isStarted())
{
return;
}
$this->store->start();
$this->setState(SessionState::ACTIVE);
// Initialise the session
$this->setCounter();

in /www/htdocs/w017537f/liviagrupp.de/libraries/vendor/joomla/session/src/Session.php -> start (line 333)

*/
public function has($name)
{
if (!$this->isActive())
{
$this->start();
}
return $this->store->has($name);
}

Session->has('user') in /www/htdocs/w017537f/liviagrupp.de/libraries/src/Session/Session.php (line 198)

$name = $args[2] . '.' . $name;
}
}
if (parent::has($name))
{
// Parent is used because of b/c, can be changed in Joomla 5
return parent::get($name, $default);
}

Session->get('user') in /www/htdocs/w017537f/liviagrupp.de/libraries/src/Factory.php (line 338)

__CLASS__
),
E_USER_DEPRECATED
);
$instance = self::getApplication()->getSession()->get('user');
if (\is_null($id))
{
if (!($instance instanceof User))
{

Factory::getUser() in /www/htdocs/w017537f/liviagrupp.de/libraries/src/Application/SiteApplication.php (line 619)

*
* @since 3.2
*/
protected function initialiseApp($options = array())
{
$user = Factory::getUser();
// If the user is a guest we populate it with the guest user group.
if ($user->guest)
{
$guestUsergroup = ComponentHelper::getParams('com_users')->get('guest_usergroup', 1);

SiteApplication->initialiseApp() in /www/htdocs/w017537f/liviagrupp.de/libraries/src/Application/SiteApplication.php (line 222)

* @since 3.2
*/
protected function doExecute()
{
// Initialise the application
$this->initialiseApp();
// Mark afterInitialise in the profiler.
JDEBUG ? $this->profiler->mark('afterInitialise') : null;
// Route the application

SiteApplication->doExecute() in /www/htdocs/w017537f/liviagrupp.de/libraries/src/Application/CMSApplication.php (line 278)

$this->sanityCheckSystemVariables();
$this->setupLogging();
$this->createExtensionNamespaceMap();
// Perform application routines.
$this->doExecute();
// If we have an application document object, render it.
if ($this->document instanceof \Joomla\CMS\Document\Document)
{
// Render the application output.

CMSApplication->execute() in /www/htdocs/w017537f/liviagrupp.de/includes/app.php (line 63)

// Set the application as global app
\Joomla\CMS\Factory::$application = $app;
// Execute the application.
$app->execute();

require_once('/www/htdocs/w017537f/liviagrupp.de/includes/app.php') in /www/htdocs/w017537f/liviagrupp.de/index.php (line 32)

* define() is used rather than "const" to not error for PHP 5.2 and lower
*/
define('_JEXEC', 1);
// Run the application - All executable code should be triggered through this file
require_once dirname(__FILE__) . '/includes/app.php';

Stack Traces 2

[2/2] Error
Error: Call to a member function getTag() on null at /www/htdocs/w017537f/liviagrupp.de/libraries/src/WebAsset/AssetItem/LangActiveAssetItem.php:46 at Joomla\CMS\WebAsset\AssetItem\LangActiveAssetItem->__construct('template.active.language', '', array('description' => 'An asset to allow language specific css, eg \'language/[lang-CODE]/[lang-CODE].css\', to use it as a dependency to the active template', 'type' => 'style', 'class' => 'LangActiveAssetItem', 'dependencies' => array('template.active'), 'assetSource' => array('registryFile' => 'templates/cassiopeia/joomla.asset.json')), array(), array()) (/www/htdocs/w017537f/liviagrupp.de/libraries/src/WebAsset/WebAssetRegistry.php:241) at Joomla\CMS\WebAsset\WebAssetRegistry->createAsset('template.active.language', '', array('description' => 'An asset to allow language specific css, eg \'language/[lang-CODE]/[lang-CODE].css\', to use it as a dependency to the active template', 'type' => 'style', 'class' => 'LangActiveAssetItem', 'dependencies' => array('template.active'), 'assetSource' => array('registryFile' => 'templates/cassiopeia/joomla.asset.json'))) (/www/htdocs/w017537f/liviagrupp.de/libraries/src/WebAsset/WebAssetRegistry.php:424) at Joomla\CMS\WebAsset\WebAssetRegistry->parseRegistryFile('templates/cassiopeia/joomla.asset.json') (/www/htdocs/w017537f/liviagrupp.de/libraries/src/WebAsset/WebAssetRegistry.php:347) at Joomla\CMS\WebAsset\WebAssetRegistry->parseRegistryFiles() (/www/htdocs/w017537f/liviagrupp.de/libraries/src/WebAsset/WebAssetRegistry.php:128) at Joomla\CMS\WebAsset\WebAssetRegistry->get('style', 'theme.colors_standard') (/www/htdocs/w017537f/liviagrupp.de/libraries/src/WebAsset/WebAssetManager.php:277) at Joomla\CMS\WebAsset\WebAssetManager->useAsset('style', 'theme.colors_standard') (/www/htdocs/w017537f/liviagrupp.de/libraries/src/WebAsset/WebAssetManager.php:245) at Joomla\CMS\WebAsset\WebAssetManager->__call('registerandusestyle', array('theme.colors_standard', 'media/templates/site/cassiopeia/css/global/colors_standard.css')) (/www/htdocs/w017537f/liviagrupp.de/templates/cassiopeia/error.php:38) at require('/www/htdocs/w017537f/liviagrupp.de/templates/cassiopeia/error.php') (/www/htdocs/w017537f/liviagrupp.de/libraries/src/Document/HtmlDocument.php:779) at Joomla\CMS\Document\HtmlDocument->_loadTemplate('/www/htdocs/w017537f/liviagrupp.de/templates/cassiopeia', 'error.php') (/www/htdocs/w017537f/liviagrupp.de/libraries/src/Document/HtmlDocument.php:838) at Joomla\CMS\Document\HtmlDocument->_fetchTemplate(array('template' => 'cassiopeia_lg_cass_22', 'directory' => '/www/htdocs/w017537f/liviagrupp.de/templates', 'debug' => '1', 'csp_nonce' => null, 'templateInherits' => 'cassiopeia', 'params' => object(Registry), 'file' => 'error.php')) (/www/htdocs/w017537f/liviagrupp.de/libraries/src/Document/HtmlDocument.php:641) at Joomla\CMS\Document\HtmlDocument->parse(array('template' => 'cassiopeia_lg_cass_22', 'directory' => '/www/htdocs/w017537f/liviagrupp.de/templates', 'debug' => '1', 'csp_nonce' => null, 'templateInherits' => 'cassiopeia', 'params' => object(Registry), 'file' => 'error.php')) (/www/htdocs/w017537f/liviagrupp.de/libraries/src/Document/HtmlDocument.php:660) at Joomla\CMS\Document\HtmlDocument->render(false, array('template' => 'cassiopeia_lg_cass_22', 'directory' => '/www/htdocs/w017537f/liviagrupp.de/templates', 'debug' => '1', 'csp_nonce' => null, 'templateInherits' => 'cassiopeia', 'params' => object(Registry), 'file' => 'error.php')) (/www/htdocs/w017537f/liviagrupp.de/libraries/src/Document/ErrorDocument.php:140) at Joomla\CMS\Document\ErrorDocument->render(false, array('template' => 'cassiopeia_lg_cass_22', 'directory' => '/www/htdocs/w017537f/liviagrupp.de/templates', 'debug' => '1', 'csp_nonce' => null, 'templateInherits' => 'cassiopeia', 'params' => object(Registry), 'file' => 'error.php')) (/www/htdocs/w017537f/liviagrupp.de/libraries/src/Error/Renderer/HtmlRenderer.php:77) at Joomla\CMS\Error\Renderer\HtmlRenderer->render(object(RuntimeException)) (/www/htdocs/w017537f/liviagrupp.de/libraries/src/Exception/ExceptionHandler.php:131) at Joomla\CMS\Exception\ExceptionHandler::render(object(RuntimeException)) (/www/htdocs/w017537f/liviagrupp.de/libraries/src/Exception/ExceptionHandler.php:74) at Joomla\CMS\Exception\ExceptionHandler::handleException(object(RuntimeException)) (/www/htdocs/w017537f/liviagrupp.de/libraries/src/Application/CMSApplication.php:311) at Joomla\CMS\Application\CMSApplication->execute() (/www/htdocs/w017537f/liviagrupp.de/includes/app.php:63) at require_once('/www/htdocs/w017537f/liviagrupp.de/includes/app.php') (/www/htdocs/w017537f/liviagrupp.de/index.php:32)

[2/2] Error

Error:
Call to a member function getTag() on null

  at /www/htdocs/w017537f/liviagrupp.de/libraries/src/WebAsset/AssetItem/LangActiveAssetItem.php:46
  at Joomla\CMS\WebAsset\AssetItem\LangActiveAssetItem->__construct('template.active.language', '', array('description' => 'An asset to allow language specific css, eg \'language/[lang-CODE]/[lang-CODE].css\', to use it as a dependency to the active template', 'type' => 'style', 'class' => 'LangActiveAssetItem', 'dependencies' => array('template.active'), 'assetSource' => array('registryFile' => 'templates/cassiopeia/joomla.asset.json')), array(), array())
     (/www/htdocs/w017537f/liviagrupp.de/libraries/src/WebAsset/WebAssetRegistry.php:241)
  at Joomla\CMS\WebAsset\WebAssetRegistry->createAsset('template.active.language', '', array('description' => 'An asset to allow language specific css, eg \'language/[lang-CODE]/[lang-CODE].css\', to use it as a dependency to the active template', 'type' => 'style', 'class' => 'LangActiveAssetItem', 'dependencies' => array('template.active'), 'assetSource' => array('registryFile' => 'templates/cassiopeia/joomla.asset.json')))
     (/www/htdocs/w017537f/liviagrupp.de/libraries/src/WebAsset/WebAssetRegistry.php:424)
  at Joomla\CMS\WebAsset\WebAssetRegistry->parseRegistryFile('templates/cassiopeia/joomla.asset.json')
     (/www/htdocs/w017537f/liviagrupp.de/libraries/src/WebAsset/WebAssetRegistry.php:347)
  at Joomla\CMS\WebAsset\WebAssetRegistry->parseRegistryFiles()
     (/www/htdocs/w017537f/liviagrupp.de/libraries/src/WebAsset/WebAssetRegistry.php:128)
  at Joomla\CMS\WebAsset\WebAssetRegistry->get('style', 'theme.colors_standard')
     (/www/htdocs/w017537f/liviagrupp.de/libraries/src/WebAsset/WebAssetManager.php:277)
  at Joomla\CMS\WebAsset\WebAssetManager->useAsset('style', 'theme.colors_standard')
     (/www/htdocs/w017537f/liviagrupp.de/libraries/src/WebAsset/WebAssetManager.php:245)
  at Joomla\CMS\WebAsset\WebAssetManager->__call('registerandusestyle', array('theme.colors_standard', 'media/templates/site/cassiopeia/css/global/colors_standard.css'))
     (/www/htdocs/w017537f/liviagrupp.de/templates/cassiopeia/error.php:38)
  at require('/www/htdocs/w017537f/liviagrupp.de/templates/cassiopeia/error.php')
     (/www/htdocs/w017537f/liviagrupp.de/libraries/src/Document/HtmlDocument.php:779)
  at Joomla\CMS\Document\HtmlDocument->_loadTemplate('/www/htdocs/w017537f/liviagrupp.de/templates/cassiopeia', 'error.php')
     (/www/htdocs/w017537f/liviagrupp.de/libraries/src/Document/HtmlDocument.php:838)
  at Joomla\CMS\Document\HtmlDocument->_fetchTemplate(array('template' => 'cassiopeia_lg_cass_22', 'directory' => '/www/htdocs/w017537f/liviagrupp.de/templates', 'debug' => '1', 'csp_nonce' => null, 'templateInherits' => 'cassiopeia', 'params' => object(Registry), 'file' => 'error.php'))
     (/www/htdocs/w017537f/liviagrupp.de/libraries/src/Document/HtmlDocument.php:641)
  at Joomla\CMS\Document\HtmlDocument->parse(array('template' => 'cassiopeia_lg_cass_22', 'directory' => '/www/htdocs/w017537f/liviagrupp.de/templates', 'debug' => '1', 'csp_nonce' => null, 'templateInherits' => 'cassiopeia', 'params' => object(Registry), 'file' => 'error.php'))
     (/www/htdocs/w017537f/liviagrupp.de/libraries/src/Document/HtmlDocument.php:660)
  at Joomla\CMS\Document\HtmlDocument->render(false, array('template' => 'cassiopeia_lg_cass_22', 'directory' => '/www/htdocs/w017537f/liviagrupp.de/templates', 'debug' => '1', 'csp_nonce' => null, 'templateInherits' => 'cassiopeia', 'params' => object(Registry), 'file' => 'error.php'))
     (/www/htdocs/w017537f/liviagrupp.de/libraries/src/Document/ErrorDocument.php:140)
  at Joomla\CMS\Document\ErrorDocument->render(false, array('template' => 'cassiopeia_lg_cass_22', 'directory' => '/www/htdocs/w017537f/liviagrupp.de/templates', 'debug' => '1', 'csp_nonce' => null, 'templateInherits' => 'cassiopeia', 'params' => object(Registry), 'file' => 'error.php'))
     (/www/htdocs/w017537f/liviagrupp.de/libraries/src/Error/Renderer/HtmlRenderer.php:77)
  at Joomla\CMS\Error\Renderer\HtmlRenderer->render(object(RuntimeException))
     (/www/htdocs/w017537f/liviagrupp.de/libraries/src/Exception/ExceptionHandler.php:131)
  at Joomla\CMS\Exception\ExceptionHandler::render(object(RuntimeException))
     (/www/htdocs/w017537f/liviagrupp.de/libraries/src/Exception/ExceptionHandler.php:74)
  at Joomla\CMS\Exception\ExceptionHandler::handleException(object(RuntimeException))
     (/www/htdocs/w017537f/liviagrupp.de/libraries/src/Application/CMSApplication.php:311)
  at Joomla\CMS\Application\CMSApplication->execute()
     (/www/htdocs/w017537f/liviagrupp.de/includes/app.php:63)
  at require_once('/www/htdocs/w017537f/liviagrupp.de/includes/app.php')
     (/www/htdocs/w017537f/liviagrupp.de/index.php:32)

[1/2] RuntimeException
RuntimeException: Failed to start the session because headers have already been sent by "/www/htdocs/w017537f/liviagrupp.de/libraries/vendor/joomla/input/src/Input.php" at line 42. at /www/htdocs/w017537f/liviagrupp.de/libraries/vendor/joomla/session/src/Storage/NativeStorage.php:473 at Joomla\Session\Storage\NativeStorage->start() (/www/htdocs/w017537f/liviagrupp.de/libraries/src/Session/Storage/JoomlaStorage.php:305) at Joomla\CMS\Session\Storage\JoomlaStorage->start() (/www/htdocs/w017537f/liviagrupp.de/libraries/vendor/joomla/session/src/Session.php:406) at Joomla\Session\Session->start() (/www/htdocs/w017537f/liviagrupp.de/libraries/vendor/joomla/session/src/Session.php:333) at Joomla\Session\Session->has('user') (/www/htdocs/w017537f/liviagrupp.de/libraries/src/Session/Session.php:198) at Joomla\CMS\Session\Session->get('user') (/www/htdocs/w017537f/liviagrupp.de/libraries/src/Factory.php:338) at Joomla\CMS\Factory::getUser() (/www/htdocs/w017537f/liviagrupp.de/libraries/src/Application/SiteApplication.php:619) at Joomla\CMS\Application\SiteApplication->initialiseApp() (/www/htdocs/w017537f/liviagrupp.de/libraries/src/Application/SiteApplication.php:222) at Joomla\CMS\Application\SiteApplication->doExecute() (/www/htdocs/w017537f/liviagrupp.de/libraries/src/Application/CMSApplication.php:278) at Joomla\CMS\Application\CMSApplication->execute() (/www/htdocs/w017537f/liviagrupp.de/includes/app.php:63) at require_once('/www/htdocs/w017537f/liviagrupp.de/includes/app.php') (/www/htdocs/w017537f/liviagrupp.de/index.php:32)

[1/2] RuntimeException

RuntimeException:
Failed to start the session because headers have already been sent by "/www/htdocs/w017537f/liviagrupp.de/libraries/vendor/joomla/input/src/Input.php" at line 42.

  at /www/htdocs/w017537f/liviagrupp.de/libraries/vendor/joomla/session/src/Storage/NativeStorage.php:473
  at Joomla\Session\Storage\NativeStorage->start()
     (/www/htdocs/w017537f/liviagrupp.de/libraries/src/Session/Storage/JoomlaStorage.php:305)
  at Joomla\CMS\Session\Storage\JoomlaStorage->start()
     (/www/htdocs/w017537f/liviagrupp.de/libraries/vendor/joomla/session/src/Session.php:406)
  at Joomla\Session\Session->start()
     (/www/htdocs/w017537f/liviagrupp.de/libraries/vendor/joomla/session/src/Session.php:333)
  at Joomla\Session\Session->has('user')
     (/www/htdocs/w017537f/liviagrupp.de/libraries/src/Session/Session.php:198)
  at Joomla\CMS\Session\Session->get('user')
     (/www/htdocs/w017537f/liviagrupp.de/libraries/src/Factory.php:338)
  at Joomla\CMS\Factory::getUser()
     (/www/htdocs/w017537f/liviagrupp.de/libraries/src/Application/SiteApplication.php:619)
  at Joomla\CMS\Application\SiteApplication->initialiseApp()
     (/www/htdocs/w017537f/liviagrupp.de/libraries/src/Application/SiteApplication.php:222)
  at Joomla\CMS\Application\SiteApplication->doExecute()
     (/www/htdocs/w017537f/liviagrupp.de/libraries/src/Application/CMSApplication.php:278)
  at Joomla\CMS\Application\CMSApplication->execute()
     (/www/htdocs/w017537f/liviagrupp.de/includes/app.php:63)
  at require_once('/www/htdocs/w017537f/liviagrupp.de/includes/app.php')
     (/www/htdocs/w017537f/liviagrupp.de/index.php:32)

RuntimeException Error

HTTP 500 Whoops, looks like something went wrong.

Call to a member function getTag() on null

Exceptions 2

Error

RuntimeException

Stack Traces 2