Error: expected str, bytes or os.PathLike object, not NoneType

[janieIradar]

Hi, I just installed the package and set up according to the documentation by adding 'sri' to INSTALLED_APP, and set USE_SRI equal to True (cause my project still in development), but I still getting this error. I have no idea which part I've done wrong. Please help!

[RealOrangeOne]

Interesting, i'm not seeing anything in that which looks specifically wrong.

Is there any more of a stack trace which tells you which line in the library is the issue? This will likely be in the django logs rather than being shown in the page.

[janieIradar]

Sorry, here is the stack trace.

Traceback (most recent call last):
File "C:\Users\janie\Documents\GoTani\dev_gotani\03_Software\02_Backend_Sourcecode\gotani_1.0.0\gotani_site\venv\lib\site-packages\django\core\handlers\exception.py", line 47, in inner
response = get_response(request)
File "C:\Users\janie\Documents\GoTani\dev_gotani\03_Software\02_Backend_Sourcecode\gotani_1.0.0\gotani_site\venv\lib\site-packages\django\core\handlers\base.py", line 179, in _get_respo
nse
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "C:\Users\janie\Documents\GoTani\dev_gotani\03_Software\02_Backend_Sourcecode\gotani_1.0.0\gotani_site\dashboard\views.py", line 93, in dashboard_page
return render(request, 'dashboard/dashboard.html', context)
File "C:\Users\janie\Documents\GoTani\dev_gotani\03_Software\02_Backend_Sourcecode\gotani_1.0.0\gotani_site\venv\lib\site-packages\django\shortcuts.py", line 19, in render
content = loader.render_to_string(template_name, context, request, using=using)
File "C:\Users\janie\Documents\GoTani\dev_gotani\03_Software\02_Backend_Sourcecode\gotani_1.0.0\gotani_site\venv\lib\site-packages\django\template\loader.py", line 62, in render_to_stri
ng
return template.render(context, request)
File "C:\Users\janie\Documents\GoTani\dev_gotani\03_Software\02_Backend_Sourcecode\gotani_1.0.0\gotani_site\venv\lib\site-packages\django\template\backends\django.py", line 61, in rende
r
return self.template.render(context)
File "C:\Users\janie\Documents\GoTani\dev_gotani\03_Software\02_Backend_Sourcecode\gotani_1.0.0\gotani_site\venv\lib\site-packages\django\template\base.py", line 170, in render
return self._render(context)
File "C:\Users\janie\Documents\GoTani\dev_gotani\03_Software\02_Backend_Sourcecode\gotani_1.0.0\gotani_site\venv\lib\site-packages\django\template\base.py", line 162, in _render
return self.nodelist.render(context)
File "C:\Users\janie\Documents\GoTani\dev_gotani\03_Software\02_Backend_Sourcecode\gotani_1.0.0\gotani_site\venv\lib\site-packages\django\template\base.py", line 938, in render
bit = node.render_annotated(context)
File "C:\Users\janie\Documents\GoTani\dev_gotani\03_Software\02_Backend_Sourcecode\gotani_1.0.0\gotani_site\venv\lib\site-packages\django\template\base.py", line 905, in render_annotate
d
return self.render(context)
File "C:\Users\janie\Documents\GoTani\dev_gotani\03_Software\02_Backend_Sourcecode\gotani_1.0.0\gotani_site\venv\lib\site-packages\django\template\loader_tags.py", line 150, in render
return compiled_parent._render(context)
File "C:\Users\janie\Documents\GoTani\dev_gotani\03_Software\02_Backend_Sourcecode\gotani_1.0.0\gotani_site\venv\lib\site-packages\django\template\base.py", line 162, in _render
return self.nodelist.render(context)
File "C:\Users\janie\Documents\GoTani\dev_gotani\03_Software\02_Backend_Sourcecode\gotani_1.0.0\gotani_site\venv\lib\site-packages\django\template\base.py", line 938, in render
bit = node.render_annotated(context)
File "C:\Users\janie\Documents\GoTani\dev_gotani\03_Software\02_Backend_Sourcecode\gotani_1.0.0\gotani_site\venv\lib\site-packages\django\template\base.py", line 905, in render_annotate
d
return self.render(context)
File "C:\Users\janie\Documents\GoTani\dev_gotani\03_Software\02_Backend_Sourcecode\gotani_1.0.0\gotani_site\venv\lib\site-packages\django\template\library.py", line 192, in render
output = self.func(*resolved_args, **resolved_kwargs)
File "C:\Users\janie\Documents\GoTani\dev_gotani\03_Software\02_Backend_Sourcecode\gotani_1.0.0\gotani_site\venv\lib\site-packages\sri\templatetags\sri.py", line 39, in sri_static
"integrity": calculate_integrity(get_static_path(path), algorithm),
File "C:\Users\janie\Documents\GoTani\dev_gotani\03_Software\02_Backend_Sourcecode\gotani_1.0.0\gotani_site\venv\lib\site-packages\sri\utils.py", line 27, in get_static_path
return safe_join(settings.STATIC_ROOT, path)
File "C:\Users\janie\Documents\GoTani\dev_gotani\03_Software\02_Backend_Sourcecode\gotani_1.0.0\gotani_site\venv\lib\site-packages\django\utils_os.py", line 17, in safe_join
final_path = abspath(join(base, *paths))
File "C:\Users\janie\AppData\Local\Programs\Python\Python36\lib\ntpath.py", line 76, in join
path = os.fspath(path)
TypeError: expected str, bytes or os.PathLike object, not NoneType

[RealOrangeOne]

hmm interesting. Looks like that's coming from https://github.com/RealOrangeOne/django-sri/blob/master/sri/utils.py#L27.

Do you have STATIC_ROOT defined in your settings?

[janieIradar]

No actually, my project currently using STATICFILES_DIRS.

[RealOrangeOne]

ah, ok, I see the issue. It looks like it's incorrect to be reading files direct from STATIC_ROOT as I am. It should instead look at those dirs.

There's probably a helper in Django for getting the filesystem path of a static file somewhere, i'll give it a look over the weekend