Fetch a new WordPress Nonce if the current one is expired.

[calvinalkan]

The Gutenberg editor always fetches a new WordPress nonce when the current one is expired, but the user is still logged in.

WordPress/gutenberg#16683

FluentCRM should do the same.

The WP-Rest API will always return this error for expired nonces for logged-in users.

return new WP_Error( 'rest_cookie_invalid_nonce', __( 'Cookie check failed' ), array( 'status' => 403 ) );

From rest_cookie_check_errors.

I think this is even handled automatically if you use the official client JS for the rest API.

	// Send a refreshed nonce in header.
	rest_get_server()->send_header( 'X-WP-Nonce', wp_create_nonce( 'wp_rest' ) );

[calvinalkan]

You can easily test this by adding this core hook:

add_filter( 'nonce_life', function() {
    return 5;
} );

Then load a FluentCRM page,

Wait 5 secs, and then you won't be able to change anything until you do a crtl+R, even though you are logged in.