We’ve been using the WordPress plugin successfully for months. Today, with no other relevant changes (plugin v3.5.2) we are getting a 404 when a user authenticates with Google or LinkedIn. They return to a URL like this one:
This 404s but if you repeat it or shorten the “state” value it redirects to https://domain.com/?message=Invalidauthorizationcode# (which seems to indicate the code is being processed but the “state” is messing things up.
I noticed the two URL encoded characters at the end of “state” - is that messing something up? Any ideas as to why this URL is 404-ing despite being seemingly accurate and matching expected functionality?