try to use database

zimbraSingle.php

@@ -794,12 +794,13 @@ function zimbraSingle_ServiceSingleSignOn($params) {
 function zimbraSingle_AdminServicesTabFieldsSave($params) {
     $addonQuota = $params['configoptions']['addonQuota']  + $params['configoptions']['newAddQuota'] ;
     $newAddQuota = 0;
-    $addonQuotaFieldID = Capsule::table('tblproductconfigoptions')
+    $addonQuotaFieldIDObj = Capsule::table('tblproductconfigoptions')
         ->join('tblhostingconfigoptions', 'tblproductconfigoptions.id', '=', 'tblhostingconfigoptions.configid')
         ->where('tblhostingconfigoptions.relid', '=', $params['serviceid'])
         ->where('tblproductconfigoptions.optionname', 'like', 'addonQuota%')
         ->select('tblhostingconfigoptions.id')
         ->get();
+    $addonQuotaFieldID = $addonQuotaFieldIDObj[0]->id;
     logModuleCall(
         'zimbrasingle',
         __FUNCTION__,