Version 2.6, installed from AUR, Arch Linux.
The traceback:
Traceback (most recent call last):
File "/usr/lib/python3.6/site-packages/cheroot/server.py", line 1152, in communicate
req.respond()
File "/usr/lib/python3.6/site-packages/cheroot/server.py", line 974, in respond
self.server.gateway(self).respond()
File "/usr/lib/python3.6/site-packages/cheroot/wsgi.py", line 131, in respond
response = self.req.server.wsgi_app(self.env, self.start_response)
File "/usr/lib/python3.6/site-packages/mnemosyne/web_server/web_server.py", line 145, in wsgi_app
self.load_mnemosyne()
File "/usr/lib/python3.6/site-packages/mnemosyne/pyqt_ui/qt_web_server.py", line 86, in load_mnemosyne
WebServer.load_mnemosyne(self)
File "/usr/lib/python3.6/site-packages/mnemosyne/web_server/web_server.py", line 111, in load_mnemosyne
filename=self.filename, automatic_upgrades=False)
File "/usr/lib/python3.6/site-packages/mnemosyne/libmnemosyne/__init__.py", line 241, in initialise
self.start_review()
File "/usr/lib/python3.6/site-packages/mnemosyne/libmnemosyne/__init__.py", line 367, in start_review
self.config()["study_mode"]))
File "/usr/lib/python3.6/site-packages/mnemosyne/libmnemosyne/controllers/default_controller.py", line 103, in set_study_mode
study_mode.activate()
File "/usr/lib/python3.6/site-packages/mnemosyne/libmnemosyne/study_modes/scheduled_forgotten_new.py", line 22, in activate
self.activate_components()
File "/usr/lib/python3.6/site-packages/mnemosyne/libmnemosyne/study_mode.py", line 27, in activate_components
Component.activate(self) # Also activates GUI components.
File "/usr/lib/python3.6/site-packages/mnemosyne/libmnemosyne/component.py", line 74, in activate
component = component(component_manager=self.component_manager)
File "/usr/lib/python3.6/site-packages/mnemosyne/web_server/review_wdgt.py", line 26, in __init__
self.review_controller().set_render_chain("web_server")
AttributeError: 'NoneType' object has no attribute 'set_render_chain'
Btw. did you consider using mypy for static code analysis?