bugfix create customfields

zimbraSingle.php

@@ -100,7 +100,8 @@ function zimbraSingleCreateCustomFields($packageconfigoption)
     try {
         $customFieldIDs = Capsule::table('tblcustomfields')
             ->where('relid', '=', $productID)
-            ->select('id');
+            ->select('id')
+            ->get();
         logModuleCall(
             'zimbrasingle',
             __FUNCTION__,