How to change encoding in WebDAV?

Question

Apache HTTP Server

Given: raspbbery Pi4 ARM processor
it has openmdeiavault5 on debian9 I
installed the service via Docker and porteiner webdav, but it apparently works not in UTF-8, which is why I get unreadable Russian characters in the browser, but when I connect via finder on mac, with goes to the directory in Russian characters in general, I get the end of the finder process.
How can I fix this and change the encoding? Looked for a config file via SSH but couldn't find it.

[email protected]:/etc $ cd apache
-bash: cd: apache: No such file or directory
[email protected]:/etc $ cd apache2
[email protected]:/etc/apache2 $ dir
conf-available  mods-available
[email protected]:/etc/apache2 $ cd conf-available/
[email protected]:/etc/apache2/conf-available $ dir
javascript-common.conf  php7.3-cgi.conf  php7.3-fpm.conf
[email protected]:/etc/apache2/conf-available $ nano php7.3-cgi.conf 
[email protected]:/etc/apache2/conf-available $

Answer 1

nothing happened. I just installed another webdav from another repository.