Wordpress Admin Panel Show Fatal error: Cannot redeclare wlwmanifest_link() (previously declared in

Question

Fatal error: Cannot redeclare wlwmanifest_link() (previously declared in /home/freefire/public_html/wp-includes/general-template.php:3382) in /home/freefire/public_html/wp-includes/deprecated.php on line 4635

How Can i Solve this. Please Help me

Hare is the Screenshot

I change the name of Plugin Folder And Theme Folder But Doesn't Work. Cause the problem in wp-includes Folder.

Answer 1

There could multiple reasons.

Maybe you have conflicting on your plugins

• backup from your site
• deactive all the plugins with rename plugins folders
• activate plugins one by one until the error is reproduced

Maybe you have conflicting code in your functions.php file. Replace default functions.php codes to your functions.php

Answer 2

I got the exact same error after a failed update of WordPress 5 to WordPress 6.3. The update failed because the server was running on PHP 7 and WordPress 6 requires PHP 8. The WordPress installation ended up in an inconsistent state containen files from both versions 5 and 6. I solved the issue by downloading zip file from WordPress.com and updating by FTP: overwriting all the files except wp_config.php (and wp_content)