Support intro
Sorry to hear you’re facing problems 
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In order to help you as quickly as possible, before clicking Create Topic please provide as much of the below as you can. Feel free to use a pastebin service for logs, otherwise either indent short log examples with four spaces:
Some or all of the below information will be requested if it isn’t supplied; for fastest response please provide as much as you can 
Nextcloud version (eg, 20.0.5): 24.0.2
Operating system and version (eg, Ubuntu 20.04): CentOS 7
Apache or nginx version (eg, Apache 2.4.25): Apache 2.4.6
PHP version (eg, 7.4): 7.4.30
The issue you are facing:
Hi,
Recently, I try to setting the config.php file just because to set the domain and also data directory but when I try to run httpd , it turns not working. Then config.php turns out blank. So, I try to install another version but it’s still blank.
Is this the first time you’ve seen this error? (Y/N):Y
Steps to replicate it:
The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):
Blank
Output errors in nextcloud.log in /var/www/ or as admin user in top right menu, filtering for errors. Use a pastebin service if necessary.
PASTE HERE