Cant Open wp-admin panel

[KangJL]

@Kuriozi

Wouldn’t it be better to do a fresh install of wordpress ???

There is no need to do that.
This will do if it is due to corrupted WP upgrade.

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…

@Kuriozi

But i dont want to loose my data …

Backup first…