Can't login using OpenID

I get a 500 "Something went wrong" message when trying to login the usual way (ie. the way I used since I created my account in 2009) using my OpenID ID.

Here is the error token gave to me:

7633f6644f3d473ebb0c6653c462dc9c$7d9aecfed59dff0a26d5cdf92f626b3e