Fatal error: Uncaught Error: Call to undefined function arch() in /home/mortezajafari/rievo-api.mortezajafari.ir/rievo-api-main/tests/Unit/ArchTest.php:5 Stack trace: #0 {main} thrown in /home/mortezajafari/rievo-api.mortezajafari.ir/rievo-api-main/tests/Unit/ArchTest.php on line 5