Include error message when raising `ScriptEngineTaskRunError`

[valentinaschueller]

Currently, whenever we raise a ScriptEngineTaskRunError, we first log the error message and then we raise the exception. However, we do not include the message in the exception, which is trivial to do and would probably only help with finding causes for errors.

[uwefladrich]

Some thoughts:

• https://stackoverflow.com/questions/52672268/logging-and-raising-an-exception
• could logging.exception() be useful?