The error source.unknown

user: the script can change it: the error says what happened in the experiment’s names, and what to write instead.

Where MIME gives it, with what its message says happened and what its action says to do ({…} is filled in from the experiment):

• in mime/build/_profile.py:

  • what happened: exp.source names {…}, which is no setting of this experiment

  • what to do: name one of its settings: exp.source("<setting>", reason="..."). {…}

Reading an error and reaching its full traceback: reading an error. Every code: the index.