ModuleNotFoundError: No module named 'otree.common_internal'

[zhe she]

Dear all,

I am testing some old otree apps.   I used  pip install -U "otree<5"  to go back to version 3.4.  I got the below error message. Has anyone encountered similar issues before? If yes, could you tell me what to do? Thanks a lot. 

Best,

Vera

[Chris @ oTree]

That code should not import from otree.common_internal, since that is a module with internal (non-public) functionality.

There are 2 options:

(a) downgrade to the specific oTree version this was originally programmed on, e.g. otree==2.x.x

(b) remove that import statement and any use of get_models_module, which is the function that is being imported from that module. That function should really not be needed.

[Chris @ oTree]

By the way if you send me the project, I can try to upgrade it to oTree 5 myself.

[zhe she]

Thanks for your advice. I have sent my project to you. Thank you for considering helping me.