If you are seeing an error like the following in your Plesk:
bash-4.4$ laravel /usr/bin/env: ‘php’: Permission denied
Your binary to php is probably being used through redirection like .bashrc file and an alias is hooked for your php command to work. A better way to do this, is to hook the php binary to your PATH variable. You may do this and fix the error by following this tutorial:
Hope this helps. Thanks.