"Invalid state" error during Auth0 WordPress redirect

I’m getting this error as well, but not with Wordpress. Users get a 500 error on my redirected PHP page sporadically, I cannot seem to reproduce the error myself. When this happens, my nginx error log shows a similar entry as above:

PHP message: PHP Fatal error: Uncaught Auth0\SDK\Exception\CoreException: Invalid state in /var/www/blah.com/vendor/auth0/auth0-php/src/Auth0.php:444

Looking through your tutorial on troubleshooting, I made the following changes to my setup:

  1. Added a version of my redirect page sans www.
  2. Added no cache headers to my redirect page.

I’ve not seen the error in my logs since making these two changes. Since this bug is intermittent I cannot reliably verify it’s been resolved for me. Going to keep an eye on the logs. @josh.cunningham Should I start a new thread since my situation doesn’t involve WP?