See b-jesch/skin.estuary.modv2#90
I installed that skin and it showed a prompt to install the Embuary helper. I pressed Yes, it got installed and then crashed. Afterwards, I could not start Kodi again as it crashes immediately after it finished loading.
Moreover, like malware it tries to access all the hidden folders in /home/username which Kodi didn't do before, which it doesn't need to do and which firejail sandboxing prevented.
I moved the folders script.embuary.info and script.embuary.helper out of /home/username/.kodi/addons/ and could start Kodi again and uninstalled the skin. Before uninstalling I tried to install embuary.helper again which caused the same two problems, so it's embuary.helper, not embuary.info or both that cause this crash.
I'm using Debian 11 with Kodi 19.1 and Embuary helper 2.0.8. Post in forum.