django - AttributeError: 'NoneType' object has no attribute 'tags' -

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traceback (most recent call last):<br/>   file "/home/rpmbuild/venv/build/pyi.linux2/mf/out00-pyz.pyz/cherrypy.wsgiserver.wsgiserver2", line 1353, in communicate<br/>   file "/home/rpmbuild/venv/build/pyi.linux2/mf/out00-pyz.pyz/cherrypy.wsgiserver.wsgiserver2", line 868, in respond<br/>   file "/home/rpmbuild/venv/build/pyi.linux2/mf/out00-pyz.pyz/cherrypy.wsgiserver.wsgiserver2", line 2267, in respond<br/>   file "/home/rpmbuild/venv/build/pyi.linux2/mf/out00-pyz.pyz/cherrypy.wsgiserver.wsgiserver2", line 2477, in __call__<br/>   file "/home/rpmbuild/venv/build/pyi.linux2/mf/out00-pyz.pyz/django.core.handlers.wsgi", line 206, in __call__<br/>   file "/home/rpmbuild/venv/build/pyi.linux2/mf/out00-pyz.pyz/django.core.handlers.base", line 194, in get_response<br/>   file "/home/rpmbuild/venv/build/pyi.linux2/mf/out00-pyz.pyz/django.core.handlers.base", line 229, in handle_uncaught_exception<br/>   file "/home/rpmbuild/venv/build/pyi.linux2/mf/out00-pyz.pyz/django.views.debug", line 69, in technical_500_response<br/>   file "/home/rpmbuild/venv/build/pyi.linux2/mf/out00-pyz.pyz/django.views.debug", line 322, in get_traceback_html<br/>   file "/home/rpmbuild/venv/build/pyi.linux2/mf/out00-pyz.pyz/django.template.base", line 125, in __init__<br/>   file "/home/rpmbuild/venv/build/pyi.linux2/mf/out00-pyz.pyz/django.template.base", line 152, in compile_string<br/>   file "home/rpmbuild/venv/build/pyi.linux2/mf/out00-pyz.pyz/django.template.debug", line 35, in __init__<br/>   file "/home/rpmbuild/venv/build/pyi.linux2/mf/out00-pyz.pyz/django.template.base", line 239, in __init__<br/>   file "/home/rpmbuild/venv/build/pyi.linux2/mf/out00-pyz.pyz/django.template.base", line 353, in add_library<br/>  attributeerror: 'nonetype' object has no attribute 'tags'

i have pyinstaller django project running on cherrypy server. working python manage.py runserver command prompt not working using bundled through pyinstaller.

i have tested both development environment , production environment in settings.py

debug = false/true<br> allowed_hosts = ['*']

somewhere use code this:

<something>.tags

where estimated none


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