Warning: mysqli_real_connect(): (HY000/2002): php_network_getaddresses: getaddrinfo for sql113.infinityfree.com failed: Name or service not known in /home/vol3_4/infinityfree.com/if0_40554621/htdocs/wordpress/wp-includes/class-wpdb.php on line 1988
php_network_getaddresses: getaddrinfo for sql113.infinityfree.com failed: Name or service not known
Other Information
This is failing on the hosted files, no on a remote connection attempt.
I checked your wp-config.php file, and in it, I see you have configured the following:
/** nome do host do MySQL */
define('DB_HOST', ' sql113.infinityfree.com:3306');
This is not correct. The DB_HOST setting should only contain the hostname. No ports, and very importantly, no additional spaces. That space at the start is most likely the cause for the error.