No to the modification of config files. However, I tried setup the DNS and may have made an error there?
There's many error logs, like 10 or so. Here's a sample of 2 of them:
error.log
2022/08/08 10:10:21 [error] 730#730: *3756 directory index of "/var/www/html/" >
2022/08/08 10:10:21 [error] 730#730: *3756 open() "/var/www/html/wp-includes/wl>
2022/08/08 10:10:21 [error] 730#730: *3756 FastCGI sent in stderr: "Primary scr>
2022/08/08 10:10:21 [error] 730#730: *3756 directory index of "/var/www/html/" >
2022/08/08 10:10:21 [error] 730#730: *3756 open() "/var/www/html/blog/wp-includ>
2022/08/08 10:10:21 [error] 730#730: *3756 open() "/var/www/html/web/wp-include>
2022/08/08 10:10:22 [error] 730#730: *3756 open() "/var/www/html/wordpress/wp-i>
2022/08/08 10:10:22 [error] 730#730: *3756 open() "/var/www/html/website/wp-inc>
2022/08/08 10:10:22 [error] 730#730: *3756 open() "/var/www/html/wp/wp-includes>
2022/08/08 10:10:22 [error] 730#730: *3756 open() "/var/www/html/news/wp-includ>
2022/08/08 10:10:22 [error] 730#730: *3756 open() "/var/www/html/2020/wp-includ>
2022/08/08 10:10:22 [error] 730#730: *3756 open() "/var/www/html/2019/wp-includ>
2022/08/08 10:10:23 [error] 730#730: *3756 open() "/var/www/html/shop/wp-includ>
2022/08/08 10:10:23 [error] 730#730: *3756 open() "/var/www/html/wp1/wp-include>
2022/08/08 10:10:23 [error] 730#730: *3756 open() "/var/www/html/test/wp-includ>
2022/08/08 10:10:23 [error] 730#730: *3756 open() "/var/www/html/wp2/wp-include>
2022/08/08 10:10:23 [error] 730#730: *3756 open() "/var/www/html/site/wp-includ>
2022/08/08 10:10:23 [error] 730#730: *3756 open() "/var/www/html/cms/wp-include>
2022/08/08 10:10:24 [error] 730#730: *3756 open() "/var/www/html/sito/wp-includ>
error.log.1
2022/08/07 00:32:22 [error] 730#730: *2223 directory index of "/var/www/html/" >
2022/08/07 00:32:50 [crit] 730#730: *2235 SSL_do_handshake() failed (SSL: error>
2022/08/07 00:32:51 [error] 730#730: *2225 directory index of "/var/www/html/" >
2022/08/07 00:34:08 [error] 730#730: *2237 directory index of "/var/www/html/" >
2022/08/07 01:45:49 [error] 730#730: *2238 directory index of "/var/www/html/" >
2022/08/07 01:56:24 [error] 730#730: *2239 access forbidden by rule, client: 17>
2022/08/07 02:11:07 [error] 730#730: *2240 directory index of "/var/www/html/" >
2022/08/07 02:11:13 [crit] 730#730: *2251 SSL_do_handshake() failed (SSL: error>
2022/08/07 02:11:25 [error] 730#730: *2262 open() "/var/www/html/sitemap.xml" f>
2022/08/07 03:20:48 [crit] 730#730: *2280 SSL_do_handshake() failed (SSL: error>
2022/08/07 03:45:12 [error] 730#730: *2282 directory index of "/var/www/html/" >
2022/08/07 03:45:17 [crit] 730#730: *2292 SSL_do_handshake() failed (SSL: error>
2022/08/07 04:52:47 [error] 730#730: *2294 directory index of "/var/www/html/" >
2022/08/07 05:09:18 [error] 730#730: *2297 directory index of "/var/www/html/" >
2022/08/07 05:16:24 [error] 730#730: *2299 directory index of "/var/www/html/" >
2022/08/07 06:14:12 [error] 730#730: *2301 directory index of "/var/www/html/" >
2022/08/07 06:26:28 [error] 730#730: *2303 directory index of "/var/www/html/" >
2022/08/07 06:27:03 [error] 730#730: *2303 directory index of "/var/www/html/" >
2022/08/07 06:43:10 [error] 730#730: *2308 directory index of "/var/www/html/" >
2022/08/07 08:58:09 [error] 730#730: *3623 directory index of "/var/www/html/" >