[Mozger]

Ошибка в 223 строке

request = new Ext.data.Request({
            params   : params,
            action   : operation.getAction(),
            records  : operation.getRecords(),
            url      : operation.getUrl(),
            operation: operation,

            // this is needed by JsonSimlet in order to properly construct responses for
            // requests from this proxy
            proxy: me
        });