Fatal error: Uncaught Error: Class "PharIo\Version\AbstractVersionConstraint" not found in /home/bimmertest/BookStack/vendor/phar-io/version/src/constraints/ExactVersionConstraint.php:12 Stack trace: #0 {main} thrown in /home/bimmertest/BookStack/vendor/phar-io/version/src/constraints/ExactVersionConstraint.php on line 12