Why is a white screen displayed when opening the site?

Question

Network administration

When opening the site, a pure white screen appears, without any errors.
.htaccess has

php_flag display_errors on 
#php_value error_reporting 0

What could be the problem and how to fix it?

Answer 1

In .htaccess

php_flag error_reporting = E_ALL
php_flag display_errors = On
php_flag display_startup_errors = On

in the code in the first lines

echo ini_get('error_reporting');
echo ini_get('display_errors');
echo ini_get('display_startup_errors');
exit();

run and see - if everything is installed, then the settings through xtaxess work, remove the code from php and see what errors. Ideally, write these directives in php.ini.
In any case, there are logs, see the php erorlog, all errors should be there.

Answer 2

The site is not on WordPress by any chance?
Add memory for php in .htaccess.
Well, as ThunderCat said, read the logs.