Fatal error: Out of memory (allocated 2097152) (tried to allocate 4096 bytes) in /var/www/helgos/data/www/cshost-svarog.com/src/XF/App.php on line 2612

Fatal error: Uncaught Error: Class '\XF\App' not found in /var/www/helgos/data/www/cshost-svarog.com/src/XF.php:777
Stack trace:
#0 /var/www/helgos/data/www/cshost-svarog.com/src/XF.php(762): XF::setupApp('\\XF\\App')
#1 /var/www/helgos/data/www/cshost-svarog.com/src/XF.php(287): XF::app()
#2 [internal function]: XF::handleFatalError()
#3 {main}
  thrown in /var/www/helgos/data/www/cshost-svarog.com/src/XF.php on line 777