CSRF token did not match in file...

3529

I attempted to load my Flarum website within Electron using an iframe tag. The loading of the homepage and the request for the post list proceeded as expected. However, upon logging into my account, an error message was prompted.
Flarum\Http\Exception\TokenMismatchException: CSRF token did not match in file /www/wwwroot/bbs.fish-book.com/vendor/flarum/core/src/Http/Middleware/CheckCsrfToken.php on line 47 Stack trace:

3529

I tested it, and before logging into Flarum on the web, I cleared the "cookies." I encountered the same issue as in Electron. It might be because Electron didn't correctly write the flarum_session into Chrome's "cookies."

3529

This post solved my problem. https://discuss.flarum.org/d/25592-cant-log-in-when-forum-is-shown-in-an-iframe