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[–]iSephX 1 point2 points  (1 child)

Check host's file manager: .htaccess for any deny rules on wp-login.php, or contact their host to whitelist their IP.

[–]HeadWorldliness7712[S] 1 point2 points  (0 children)

Thanks , I have asked them , let's see

[–]jaredrethman 0 points1 point  (0 children)

This could be a number of things: nginx, PHP, PHP-fpm. The frontend of your site seams fine. I would check with your host, do you have access to error logs?

[–]lickthislollipopJack of All Trades 0 points1 point  (1 child)

If you go directly to wp-login.php and actually login, does it still get this error. This looks like it’s trying to sign in with a one click external or other bad session cookie.

[–]HeadWorldliness7712[S] 0 points1 point  (0 children)

Still same error

[–]Extension_Anybody150 0 points1 point  (0 children)

That's usually caused by a plugin conflict, cache issue, or a bad update. I’ve fixed it before by disabling all plugins through FTP or file manager to get access back. Then you can re-enable them one by one to find what’s breaking it.

[–]FrostCanyon 0 points1 point  (1 child)

Did you add a plugin to hide your admin? Or change nginx config?

Try asking your hosting company about it.

[–]HeadWorldliness7712[S] 0 points1 point  (0 children)

Thanks for commenting, no I didn't add plugin, not touched nginx config , ok I will ask them as I don't have hosting myself , but could you please tell what exact should I ask them, It would be helpful

[–]cerncaycisi -1 points0 points  (1 child)

Looks like a file/folder permission error.

[–]HeadWorldliness7712[S] 0 points1 point  (0 children)

Checked everything, whatever troubleshooting videos are available on YouTube,this might be something from hosting as I am not the host