Node.JS Callback is not a function Error proxy.js

[Calvin.Law]

This screenshots is extracted from the Logs

It indicates callback must be a function.

The helper function

  setTimeoutAsync: util.promisify(setTimeout),

Actual Implementation in Retry Logic

let retry Interval = 2000;
await this.setTimeoutAsync(retryInterval);

Any idea what that error beforeExecLogic in appdynamics?