Wrong setting manager_login_url_alternate

I have the problem that I accidentally entered an incorrect value in the manager_login_url_alternate field in the system settings. As a result, I cannot log in to the manager.
Unfortunately, the provider does not grant me access to PhpMyAdmin.
Is there a way to get access to the manager anyway?

Maybe you can change the value directly in the cache file, if you have access to that → core/cache/system_settings/config.cache.php.

That works! Thank you very much!

Adminer is another option if you have ftp access to the host.

Thanks, i will test it.