jos-Error: Application Instantiation Error

Joomla\CMS\Exception\ExceptionHandler :: render()
JFactory :: getApplication() @ /var/www/vhosts/gebaeude-pflege.de/httpdocs/libraries/src/Exception/ExceptionHandler.php:62
JError :: raiseError() @ /var/www/vhosts/gebaeude-pflege.de/httpdocs/libraries/joomla/factory.php:99
JError :: raise() @ /var/www/vhosts/gebaeude-pflege.de/httpdocs/libraries/joomla/error/error.php:251
JError :: throwError() @ /var/www/vhosts/gebaeude-pflege.de/httpdocs/libraries/joomla/error/error.php:176
JError :: handleCallback() @ /var/www/vhosts/gebaeude-pflege.de/httpdocs/libraries/joomla/error/error.php:214
JError :: customErrorPage() @ /var/www/vhosts/gebaeude-pflege.de/httpdocs/libraries/joomla/error/error.php:765
JFactory :: getApplication() @ /var/www/vhosts/gebaeude-pflege.de/httpdocs/libraries/joomla/error/error.php:784
JError :: raiseError() @ /var/www/vhosts/gebaeude-pflege.de/httpdocs/libraries/joomla/factory.php:99
JError :: raise() @ /var/www/vhosts/gebaeude-pflege.de/httpdocs/libraries/joomla/error/error.php:251