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Cannot load notebooks: ModuleNotFoundError: Error processing dotted path

See original GitHub issue

I have a notebook folder in ploomber project and ploomber tries to run something so I can’t even load the notebook (which BTW is not referenced in pipeline.yaml in any way)

What happened? How is it possible that ploomber breaks jupyter?

Error message

[I 11:59:22.671 NotebookApp] [Ploomber] Requested model: work/wwf/notebooks/Enrich_Test.ipynb. Looking for DAG with root dir: /home/kuba/Projects                            
[E 11:59:22.786 NotebookApp] Uncaught exception GET /api/contents/work/wwf/notebooks/Enrich_Test.ipynb?type=notebook&_=1656064762442 (127.0.0.1)                             
    HTTPServerRequest(protocol='http', host='localhost:8888', method='GET', uri='/api/contents/work/wwf/notebooks/Enrich_Test.ipynb?type=notebook&_=1656064762442', version='
HTTP/1.1', remote_ip='127.0.0.1')                                                                                                                                            
    Traceback (most recent call last):                                                                                                                                       
      File "/home/kuba/.local/lib/python3.8/site-packages/tornado/web.py", line 1704, in _execute                                                                            
        result = await result                                                                                                                                                
      File "/home/kuba/.local/lib/python3.8/site-packages/tornado/gen.py", line 234, in wrapper                                                                              
        yielded = ctx_run(next, result)                                                                                                                                      
      File "/home/kuba/.local/lib/python3.8/site-packages/notebook/services/contents/handlers.py", line 118, in get                                                          
        model = yield maybe_future(self.contents_manager.get(                  
      File "/home/kuba/.local/lib/python3.8/site-packages/ploomber/jupyter/manager.py", line 267, in get                                                                     
        self.load_dag(                                                                                                                                                       
      File "/home/kuba/.local/lib/python3.8/site-packages/ploomber/jupyter/manager.py", line 193, in load_dag                                                                
        pairs = [(resolve_path(                                                       
      File "/home/kuba/.local/lib/python3.8/site-packages/ploomber/jupyter/manager.py", line 196, in <listcomp>                                                                      if t.source.loc is not None]                                                  
      File "/home/kuba/.local/lib/python3.8/site-packages/ploomber/sources/pythoncallablesource.py", line 130, in loc                                                        
        self._loc = self._callable_loader.get_loc()                                                                                                                          
      File "/home/kuba/.local/lib/python3.8/site-packages/ploomber/sources/pythoncallablesource.py", line 58, in get_loc                                                     
        loc, _ = lazily_locate_dotted_path(self._primitive)                                                                                                                        File "/home/kuba/.local/lib/python3.8/site-packages/ploomber/util/dotted_path.py", line 343, in lazily_locate_dotted_path                                              
        raise ModuleNotFoundError('Error processing dotted '
    ModuleNotFoundError: Error processing dotted path 'deepsense_wwf.data_utils.copy_zipped_data': 'deepsense_wwf' appears to be a namespace package, which are not supported
[W 11:59:22.790 NotebookApp] Unhandled error          
[E 11:59:22.791 NotebookApp] {                                                                                                                                               
      "Host": "localhost:8888",                                                                                                                                              
      "Accept": "application/json, text/javascript, */*; q=0.01",                                                                                                            
      "Referer": "http://localhost:8888/notebooks/work/wwf/notebooks/Enrich_Test.ipynb",                                                                                     
      "User-Agent": "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:101.0) Gecko/20100101 Firefox/101.0"                                                                         
    }