Fatal error: Uncaught Error: Class "KonradMichalik\Typo3EnvironmentIndicator\Configuration\Indicator\AbstractIndicator" not found in /var/www/html/dev.hallescherfc.de/vendor/konradmichalik/typo3-environment-indicator/Classes/Configuration/Indicator/Backend/Logo.php:29 Stack trace: #0 {main} thrown in /var/www/html/dev.hallescherfc.de/vendor/konradmichalik/typo3-environment-indicator/Classes/Configuration/Indicator/Backend/Logo.php on line 29