I\'m using Laravel Socialite to add a Facebook connect button on a website. Sometimes, I\'ve got this error on callback:
exception \'Laravel\\Socialite\\Two\
I ran into this issue last night and solve it with the following solution.
More information on my issue, I've got
InvalidStateException in AbstractProvider.php line 182
in the function handleProviderCallback() when it re-direct back from Facebook login. It seems to be the same as your issue.
Furthermore I found my issue occurs when I open my site without www. When I open my site with www.mysite.com - no problem. At first I think my issue is random until I've got the clue by Chris Townsend's reply to the question - Thank you very much.
The Solution
config/session.php'domain' => null, I made a change to 'domain' => 'mysite.com'.'php artisan cache:clear' and 'composer dump-autoload', I can login with no issue from both www.mysite.com and mysite.comBe sure to delete your cookies from browser when testing it after these modifications are done. Old cookies can still produce problems.