I did the following steps:
gpg --no-default-keyring --keyring gnupg-ring:/tmp/onlyoffice.gpg --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys CB2DE8E5
chmod 644 /tmp/onlyoffice.gpg
sudo chown root:root /tmp/onlyoffice.gpg
sudo mv /tmp/onlyoffice.gpg /etc/apt/trusted.gpg.d/
echo 'deb https://download.onlyoffice.com/repo/debian squeeze main' | sudo tee -a /etc/apt/sources.list.d/onlyoffice.list
sudo apt-get update
sudo apt-get install onlyoffice-desktopeditors
desktopeditors
This returned the following:
$ desktopeditors
QLayout: Attempting to add QLayout "" to CTabBarWrapper "tabWrapper", which already has a layout
Segmentation fault
The program version was:
$ desktopeditors --version
ONLYOFFICE Desktop Editors ver. 7.2.1.36
Here is also link to the video from my window manager when running Onlyoffice:
https://youtu.be/elOeFFTrwwU
Kind regards,
Zaxon