云开发调用mysql数据库Cannot find module 'mysql2/promise'？

详细错误：Unhandled promise rejection Error: cloud.callFunction:fail -404011 cloud function execution error. 云函数执行错误

云端堆栈信息(error stack)(requestId 2836569b-b38c-11eb-848a-5254008c2339, callid 1620870011844-0.5495294339013359):

Runtime.ImportModuleError: Error: Cannot find module ‘mysql2/promise’