Let’s look at common errors that occur after migrating a WordPress site.
1. Error establishing a database connection.
Incorrect database connection details specified in the wp-config.php file.
2. The WordPress installation page opens.
The database specified in wp-config.php is empty or has no WP installation records.
3. A welcome page opens.
Delete the index.html file in your site’s root directory.
4. Forbidden. You don’t have permission to access / on this server.
The site’s root directory is empty or doesn’t exist.
5. The site’s pages don’t open, while the homepage opens without errors.
Most likely, the .htaccess file with pretty-URL rules is missing.