diff --git a/app/libs/Auth/AuthService.php b/app/libs/Auth/AuthService.php
index 3d743417..0dcc0f11 100644
--- a/app/libs/Auth/AuthService.php
+++ b/app/libs/Auth/AuthService.php
@@ -292,7 +292,7 @@ final class AuthService implements IAuthService
                 $rps = $zlib->uncompress($rps);
                 $rps .= '|';
             }
-
+            if(is_null($rps)) $rps = "";
             if (!str_contains($rps, $client_id))
                 $rps .= $client_id;