I upgraded Discourse today, and after doing so, some of my users have complained that signing in is giving them a blank page. Investigating further, I’m seeing an exception on the console
Uncaught TypeError: Cannot set property ‘disableReplaceState’ of undefined
FWIW, it’s happening at application-c138bcb70c1b2d5c6e26cf370fdcf67d.js:58
Any ideas on how to proceed?
The object that is undefined is Discourse.TopicRoute.
Do you have any plug-ins? Are they updated? Looks like Discourse No Constants stuff.
I do have a few plugins, and they are all up to date. Looking at /admin/upgrade, I am now 1 commit behind the latest discourse, but that’s it.
Can you elaborate on Discourse No Constants?
Edit: I see the discussion about DISCOURSE_NO_CONSTANTS now. I’ll look further into that, thanks.
I think that is my plugin, I will update it.
I was just about to ask… 
Thanks!
You’re talking about browser_history, right?
Yes, corrected via
https://github.com/discourse/browser_history/commit/3349b6a2df2a40b86c7e9c5acf9865e68fb09e6c