Package versions
Both for pandas and gammapy older versions are necessary to have the pipeline running:
pandas: version 0.25.3 works, current version 1.1.3 does not reason: make_irf.py: ntel = self.sim_shower_data['multiplicity'][0] [0] to access a pandas series element does not work in the new versions, iloc[0] should be used
gammapy: version 0.16 is the last that works reason: for the spectrum notebook the import of Dataset does not work anymore for newer versions