# 81010: There was an internal error while processing a Function

Log Level: ERROR

## Description

Studio could not invoke the Function service.

### Possible causes

* The Function returned a 4xx or 5xx status code
* The Function timed out or did not include `callback()`
* There may be an issue with Twilio Function Service

### Possible solutions

* Verify your Function calls `callback()` to avoid timeouts
* Check your Function logs for runtime errors
* Ensure you're returning the correct status code