"Unexpected Application Error!" -- account login issues

I'm having trouble accessing my account dashboard. I'm getting the following message (see attached image also -- I blocked out some numbers from the URLs listed, wasn't sure if they were private):

 

Unexpected Application Error!

undefined is not an object (evaluating 'bL.e[t].active')

This error message isn't listed in their common error messages page either: https://support.squarespace.com/hc/en-us/articles/206545697-Common-error-messages-in-Squarespace

I tried on Safari, Chrome and incognito. I also tried clearing my cache and restarting my computer (which is up to date). My account page does work when logging in on my phone (just not my computer).

Anyone else have this issue or know some troubleshooting magic to try?

Okay, so things are working again. Was out for like an hour.

Not sure what happened -- I did reach out to customer support, so maybe it was something on their end they could fix.

But any insights still welcome!