Here is the solution to solve this 404 error. That might can you help to get out of this.
Go to cPanel / find File Manager > public_html > WordPress directory > now find .htaccess.
Then paste this code then save the changes. 404 will fix.
# BEGIN WordPress
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ – [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
END WordPress
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