Critical error

[KangJL]

@anon37841783

tried to upgrade 6.1 from wordpress dashboard.

Do not do that. That was why you got the critical error

@anon37841783

Can you tell me what is the exactproblem on my site ?

That was why I said you should read this

How to fix a corrupted WordPress installation

WordPress frequently releases updates, which you can install through WordPress’ admin interface. Usually, this works without a hitch. But with some (big) upgrades, the upgrade fails half way and leaves you with a broken website. Fortunately, you can still fix your website without any data loss, and this article tells you how to do that. Download a fresh copy of WordPress First of all, you will need to download a fresh copy of WordPress. You can download this from the official WordPress website…