【报Bug】云端运行uniCloud.uploadFile报错

操作步骤：

···
const uploadResult = await uniCloud.uploadFile({
cloudPath: "redis_backup.json",
fileContent: fs.createReadStream(backupFilePath)
});
···

预期结果：

成功上传到云存储

实际结果：

参数校验错误: Invalid options.filePath  

Error: 参数校验错误: Invalid options.filePath
at E (/code/index.js:20:17924)
at uploadFile (/code/index.js:198:429643)
at (/tmp/function/@dcloudio/serverless/lib/aliyun/uni-cloud.js:1:5648)
at backupRedis (/tmp/function/index.obj.js:33:38)
at processTicksAndRejections (internal/process/task_queues.js:97:5)
参数校验错误: Invalid options.filePath
Error: 参数校验错误: Invalid options.filePath
at E (/code/index.js:20:17924)
at uploadFile (/code/index.js:198:429643)
at (/tmp/function/@dcloudio/serverless/lib/aliyun/uni-cloud.js:1:5648)
at backupRedis (/tmp/function/index.obj.js:33:38)
at processTicksAndRejections (internal/process/task_queues.js:97:5)
at doBackup (/tmp/function/index.obj.js:45:2)
at test (/tmp/function/index.obj.js:62:3)
at Q (/tmp/function/index.js:1:24237)
at z (/tmp/function/index.js:1:25321)
at runUserFunction (/code/index.js:98:229649)