Deprecated: Symfony\Component\Console\Helper\Helper::setHelperSet(): Implicitly marking parameter $helperSet as nullable is deprecated, the explicit nullable type must be used instead in C:\Apache24\htdocs\BookStack\vendor\symfony\console\Helper\Helper.php on line 29

Deprecated: Symfony\Component\Console\Helper\Helper::substr(): Implicitly marking parameter $length as nullable is deprecated, the explicit nullable type must be used instead in C:\Apache24\htdocs\BookStack\vendor\symfony\console\Helper\Helper.php on line 83

Fatal error: Uncaught Error: Interface "Symfony\Component\Console\Helper\HelperInterface" not found in C:\Apache24\htdocs\BookStack\vendor\symfony\console\Helper\Helper.php:22 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\BookStack\vendor\symfony\console\Helper\Helper.php on line 22