Hello found error if ajax response is empty or null or cannot connect to api server "TypeError: Cannot convert undefined or null to object" ``` return this.model.insertOrUpdate({ **data: this.getDataFromResponse(response, config) || []** }) ``` Fixed ``` private async persistResponseData( response: AxiosResponse, config: Config ): Promise<Collections | null> { if (!config.save) { return null } if (config.delete !== undefined) { await this.model.delete(config.delete as any) return null } return this.model.insertOrUpdate({ data: this.getDataFromResponse(response, config) || [] }) } ```