Fatal error: Uncaught Error: Class 'TYPO3\CMS\Core\Utility\HttpUtility' not found in /var/www/wmeyer2018/public/typo3/sysext/core/Classes/Error/AbstractExceptionHandler.php:193
Stack trace:
#0 /var/www/wmeyer2018/public/typo3/sysext/core/Classes/Error/DebugExceptionHandler.php(49): TYPO3\CMS\Core\Error\AbstractExceptionHandler->sendStatusHeaders()
#1 /var/www/wmeyer2018/public/typo3/sysext/core/Classes/Error/AbstractExceptionHandler.php(72): TYPO3\CMS\Core\Error\DebugExceptionHandler->echoExceptionWeb()
#2 [internal function]: TYPO3\CMS\Core\Error\AbstractExceptionHandler->handleException()
#3 {main}
thrown in /var/www/wmeyer2018/public/typo3/sysext/core/Classes/Error/AbstractExceptionHandler.php on line 193