FileZilla Please make sure the LC_CTYPE (or LC_ALL) environment variable is set correctly

When starting FileZilla FTP client on Ubuntu 20.04, I get the following error

A local filename could not be decoded.
Please make sure the LC_CTYPE (or LC_ALL) environment variable is set correctly.
Unless you fix this problem, files might be missing in the file listings.
No further will be displayed this session.

To fix this, I edited file

sudo vi /usr/share/applications/filezilla.desktop

Find line

Exec=filezilla

Replace with

Exec=env LC_ALL=en_US.UTF-8 filezilla