Why do I get this from https://www.virtualbox.org https://www.virtualbox.org when I access from Chrome? The site works from curl and Firefox. Traceback (most

Why do I get this from https://www.virtualbox.org https://www.virtualbox.org when I access from Chrome? The site works from curl and Firefox. Traceback (most recent call last): File "/usr/lib/python2.4/site-packages/trac/web/api.py", line 436, in send_error data, 'text/html') File "/usr/lib/python2.4/site-packages/trac/web/chrome.py", line 803, in render_template message = req.session.pop('chrome.%s.%d' % (type_, i)) File "/usr/lib/python2.4/site-packages/trac/web/api.py", line 212, in __getattr__ value = self.callbacks[name](self) File "/usr/lib/python2.4/site-packages/trac/web/main.py", line 298, in _get_session return Session(self.env, req) File "/usr/lib/python2.4/site-packages/trac/web/session.py", line 162, in __init__ self.get_session(sid) File "/usr/lib/python2.4/site-packages/trac/web/session.py", line 189, in get_session self.bake_cookie() File "/usr/lib/python2.4/site-packages/trac/web/session.py", line 170, in bake_cookie assert self.sid, 'Session ID not set' AssertionError: Session ID not set UPDATE: same error from www UPDATE: curl --header "Cookie: trac_session=" https://www.virtualbox.org https://www.virtualbox.org The issue seems to be that some plugin in Chrome erases my trac_session cookie, and the website cannot handle this. I am running Disrupt, uBlock, and PrivacyBadger. (1) Why does vbox need to track my session? (2) What python framework are they using? App should not fail in this case.