enable debug

app/Libs/Zimbra/Components/Api/Soap/Connection.php

@@ -281,7 +281,8 @@ class Connection implements ConnectionInterface
     public function request($request, $params = [], $options = [])
     {
 
-      /**
+        ini_set("default_socket_timeout", 15);
+        /**
          * headers
          */
         $soapHeader = $this->getSoapHeader();