云开发过程 上传部署云函数后可以调用，但是过一段时间就报错，重新上传部署后又可以用，但是过一段时间又报错，一直这样，怎么解决这个问题。

看了云控制台的日志

日志

START

REPORT RequestId:0b3b4d06-5b65-4ec7-872c-70be4bdbf70a Duration:26ms Memory:256MB MemUsage:22.652344MB

END

ERROR RequestId:0b3b4d06-5b65-4ec7-872c-70be4bdbf70a Result:{"errCode":1,"errMsg":"user code exception caught","stackTrace":"Error: collection.get:fail -501001 resource system error. tmp secret key expire\n at Object.toSDKError (/var/user/node_modules/wx-server-sdk/index.js:8089:19)\n at Object.checkError (/var/user/node_modules/wx-server-sdk/index.js:1422:23)\n at Promise (/var/user/node_modules/wx-server-sdk/index.js:1489:33)\n at process._tickCallback (internal/process/next_tick.js:68:7)"}