Update error message for user not found in updateGR method for clarity

app/Http/Controllers/PdfController.php

@@ -98,7 +98,7 @@ class PdfController extends Controller
         if (!$user) {
             return response()->json([
                 'status_code' => 'ERROR',
-                'status_description' => "'{$data['scanned_by']}' not found for plant {$data['plant_code']}!"
+                'status_description' => "'{$data['scanned_by']}' user not found!"
             ], 404);
         }