Fatal error: Uncaught ValueError: trigger_error(): Argument #2 ($error_level) must be one of E_USER_ERROR, E_USER_WARNING, E_USER_NOTICE, or E_USER_DEPRECATED in /in/6Vab7:3
Stack trace:
#0 /in/6Vab7(3): trigger_error('Only variables ...', 8)
#1 {main}
thrown in /in/6Vab7 on line 3
Process exited with code 255.