Describe the bug
As we reworked the python PUM library for TMMT requirements, be aware that you will not be able to have both qgep datamodel tool and TMMT installed on your system simultaneously without encountering compatility issues.

Workaround :

In your osgeo4w shell, remove packages and install these directly from the plugin after having QGIS restarted

pip uninstall pum
pip unistall pirogue

installation of prerequisites goes too far at least visually

Should be pirogue == 1.4.1 and pum <= 0.10.0 or pum == 0.10

If it is solved, you should be able to use qgep datamodel tool as before

To Reproduce
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2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior
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Screenshots / data
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Desktop (please complete the following information):

• QGEP plugin version
• QGEP datamodel version
• QGEP project file version
• QGIS Version
• OS

Additional context
Linked issue and PR : QGEP/datamodel#246 requirements are badly configured