Cannot start web server in version 2.5

[Matt Stobo]

Whenever I try to run the web server I get the following error:

AttributeError("'NoneType' object has no attribute 'set_render_chain'",)
Traceback (most recent call last):
  File "/usr/local/lib/python3.6/dist-packages/cheroot/server.py", line 1124, in communicate
    req.respond()
  File "/usr/local/lib/python3.6/dist-packages/cheroot/server.py", line 951, in respond
    self.server.gateway(self).respond()
  File "/usr/local/lib/python3.6/dist-packages/cheroot/wsgi.py", line 125, in respond
    response = self.req.server.wsgi_app(self.env, self.start_response)
  File "/usr/local/lib/python3.6/dist-packages/Mnemosyne-2.5-py3.6.egg/mnemosyne/web_server/web_server.py", line 145, in wsgi_app
    self.load_mnemosyne()
  File "/usr/local/lib/python3.6/dist-packages/Mnemosyne-2.5-py3.6.egg/mnemosyne/web_server/web_server.py", line 111, in load_mnemosyne
    filename=self.filename, automatic_upgrades=False)
  File "/usr/local/lib/python3.6/dist-packages/Mnemosyne-2.5-py3.6.egg/mnemosyne/libmnemosyne/__init__.py", line 237, in initialise
    self.start_review()
  File "/usr/local/lib/python3.6/dist-packages/Mnemosyne-2.5-py3.6.egg/mnemosyne/libmnemosyne/__init__.py", line 362, in start_review
    self.config()["study_mode"]))
  File "/usr/local/lib/python3.6/dist-packages/Mnemosyne-2.5-py3.6.egg/mnemosyne/libmnemosyne/controllers/default_controller.py", line 100, in set_study_mode
    study_mode.activate()
  File "/usr/local/lib/python3.6/dist-packages/Mnemosyne-2.5-py3.6.egg/mnemosyne/libmnemosyne/study_modes/scheduled_forgotten_new.py", line 22, in activate
    self.activate_components()
  File "/usr/local/lib/python3.6/dist-packages/Mnemosyne-2.5-py3.6.egg/mnemosyne/libmnemosyne/study_mode.py", line 27, in activate_components
    Component.activate(self) # Also activates GUI components.
  File "/usr/local/lib/python3.6/dist-packages/Mnemosyne-2.5-py3.6.egg/mnemosyne/libmnemosyne/component.py", line 74, in activate
    component = component(component_manager=self.component_manager)
  File "/usr/local/lib/python3.6/dist-packages/Mnemosyne-2.5-py3.6.egg/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'

I get this error on both Ubuntu and Arch Linux.

[Peter Bienstman (peter-bienstman)]

Moved here:

https://github.com/mnemosyne-proj/mnemosyne/issues/7

[Peter Bienstman (peter-bienstman)]

Should already have been fixed in the latest version here: https://github.com/mnemosyne-proj/mnemosyne , as I cannot reproduce it.

Please open a github issue in case you still have problems.