The error controller.more-than-one

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/_plan.py:

  • what happened: set_controller is called {…} times, and an experiment has one controller

  • what to do: call exp.set_controller(...) once: one controller reads and writes as many labels as it needs

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