UnboundLocalError: local variable 'df' referenced before assignment

[pierrepo]

While using the app, I got this error message:

 File "/home/pierre/workp/projets/2018_MinOmics/2020_thèse_Thibault_Poinsignon/3d-scere.git/app.py", line 400, in <listcomp>
    tools.parse_contents(c, n, "datatable_tab1") for c, n in
  File "/home/pierre/workp/projets/2018_MinOmics/2020_thèse_Thibault_Poinsignon/3d-scere.git/lib/tools.py", line 76, in parse_contents
    data=df.to_dict('records'),
UnboundLocalError: local variable 'df' referenced before assignment

Could you please have a look @Thibault-Poinsignon ?

[Thibault-Poinsignon]

I don't seem to be able to reproduce this error by using the app, what is the action that trigger it @pierrepo ?

[pierrepo]

I don't remember exactly. It was while using the app.