Fatal error: Uncaught Error: Interface "Illuminate\Contracts\Validation\ValidationRule" not found in C:\laragon\www\Servers\7\localuser\astrobilg_ydo6tyh3u6\httpdocs\app\Rules\ValidReferralCode.php:14 Stack trace: #0 {main} thrown in C:\laragon\www\Servers\7\localuser\astrobilg_ydo6tyh3u6\httpdocs\app\Rules\ValidReferralCode.php on line 14