SSO discourse have error at same session

[simon]

@cmdntd

First it’s work smoothly

But when I’m in the same session (not log out), and try to go to link admin /wp-admin/, it does not redirect me to dashboard, and show this error in login form:

Expired Nonce

I think the problem you are having is caused by object caching on your server. Try adding something like the following code to your WordPress theme’s functions.php file to see if that solves the problem:

add_filter('wpdc_sso_client_query', 'wpdc_custom_sso_client_query' );
function wpdc_custom_sso_client_query() {
    return wp_generate_password( 12, false );
}

There are some details about this here: Wordpress SSO Expired nonce.