AWS Lambda - Error [CredentialsError]: Missing credentials in config, if using AWS_CONFIG_FILE, set AWS_SDK_LOAD_CONFIG=1

Question

We're using Lambda functions and only for some executions, do we get this error.

Error [CredentialsError]: Missing credentials in config, if using AWS_CONFIG_FILE, set AWS_SDK_LOAD_CONFIG=1
    at Object.openSync (fs.js:497:3)
    at Object.readFileSync (fs.js:393:35)
    at Object.readFileSync (/var/task/back/requests/router.js:2:965376)
    at constructor.o [as parseFile] (/var/task/back/requests/router.js:2:950732)
    at constructor.loadFrom (/var/task/back/requests/router.js:2:951161)
    at Object.getProfilesFromSharedConfig (/var/task/back/requests/router.js:2:978785)
    at constructor.load (/var/task/back/requests/router.js:2:798037)
    at constructor.coalesceRefresh (/var/task/back/requests/router.js:2:783742)
    at constructor.refresh (/var/task/back/requests/router.js:2:798989)
    at constructor.get (/var/task/back/requests/router.js:2:783568) {
  errno: -2,
  syscall: 'open',
  code: 'CredentialsError',
  path: '/home/sbx_user1051/.aws/credentials',
  time: 2022-05-13T23:23:18.700Z,
  originalError: {
    message: 'Could not load credentials from constructor',
    errno: -2,
    syscall: 'open',
    code: 'CredentialsError',
    path: '/home/sbx_user1051/.aws/credentials',
    time: 2022-05-13T23:23:18.700Z,
    originalError: {
      errno: -2,
      syscall: 'open',
      code: 'ENOENT',
      path: '/home/sbx_user1051/.aws/credentials',
      message: "ENOENT: no such file or directory, open '/home/sbx_user1051/.aws/credentials'"
    }
  }
}

I suspect that this is related to the lambda being triggered by an SQS event, not by the API?

I don't mind following the advice of any of the other answers on the subject, but it is really bugging me that only a few lambda functions are facing this issue and not all functions in the application.

Answer 1

False alarm.

I discovered having hard-coded credentials in one of the files calling aws-sdk, turns out it has nothing to do with dynamodab.