[RSS Feed/News] Database error after moving to new server

[XenForo]

I tested moving my database and files to a new server. The config.php contains the new database details. data and internal_data is set to CHMOD 777.

But when I try to enter the site I get the following error:

An unexpected database error occurred. Please try again later.
<!-- php_network_getaddresses: getaddrinfo failed: Name or service not known -->
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XF 2.2.12
PHP 8.0.27

What can I do to fix it?

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