I am having issues with WP SSO plugin, Plugin is configured as per installation guide both Flarum extentions and wordpress Plugin, but when user logs in I am getting following error...
Fatal error: Uncaught GuzzleHttp\Exception\ClientException: Client error: POST https://example.com/forum/api/users resulted in a 400 Bad Request response: {"errors":[{"status":"400","code":"csrf_token_mismatch"}]} in /home/customer/www/cuehacks.com/public_html/wp-content/plugins/sso-flarum/vendor/guzzlehttp/guzzle/src/Exception/RequestException.php:113 Stack trace: #0 /home/customer/www/cuehacks.com/public_html/wp-content/plugins/sso-flarum/vendor/guzzlehttp/guzzle/src/Middleware.php(69): GuzzleHttp\Exception\RequestException::create(Object(GuzzleHttp\Psr7\Request), Object(GuzzleHttp\Psr7\Response), NULL, Array, NULL) #1 /home/customer/www/cuehacks.com/public_html/wp-content/plugins/sso-flarum/vendor/guzzlehttp/promises/src/Promise.php(204): GuzzleHttp\Middleware::GuzzleHttp{closure}(Object(GuzzleHttp\Psr7\Response)) #2 /home/customer/www/cuehacks.com/public_html/wp-content/plugins/sso-flarum/vendor/guzzlehttp/promises/src/Promise.php(153): GuzzleHttp\Promise\Promise::callHandler(1, Object(GuzzleHttp\Psr7\Response) in /home/customer/www/cuehacks.com/public_html/wp-content/plugins/sso-flarum/vendor/guzzlehttp/guzzle/src/Exception/RequestException.php on line 113