We can't open a file with a Japanese name by Collabora

I can’t open files in my environment if the file name is specified in Japanese. If I set the file name to English, I can open that file.
I have verified this on the Collabora demo site, but the site has a file with a Japanese name in I was able to open it. So it seems to be a problem in my environment.
This has occurred since Collabora 6.2.16. It also occurs in the latest 6.2.17.

What makes it impossible to open a file with a Japanese name?


CentOS 7.7, PHP7.3.18, Nginx 1.16.1, MariaDB 10.2.32, Nextcloud 19.0.0, Loolwsd 4.2.4, Collabora 6.2-17.