diff --git a/app/Controllers/RestAuthenticationController.php b/app/Controllers/RestAuthenticationController.php
index 4aaf962d..6e3e3fb0 100755
--- a/app/Controllers/RestAuthenticationController.php
+++ b/app/Controllers/RestAuthenticationController.php
@@ -300,7 +300,7 @@ class RestAuthenticationController extends AdminController
 
         
         $email = $this->request->getJSON()->email ?? null;
-        $mobile_number = $this->request->getJSON()->mobile_number;
+        $mobile_number = $this->request->getJSON()->mobile_number ?? null;
         $otp = $this->request->getJSON()->otp;
         $client_id = $this->request->getJSON()->client_id ?? null;
         $employee_id = $this->request->getJSON()->employee_id ?? null;