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