Can't start appimage

Good morning folks. I have trouble starting Chirpity appimage. The error from konsole says the following:
3499:0426/091800.327969:FATAL:setuid_sandbox_host.cc(158)] The SUID sandbox helper binary was found, but is not configured correctly. Rather than run without sandboxing I’m aborting now. You need to make sure that /tmp/.mount_ChirpinboCJQ/chrome-sandbox is owned by root and has mode 4755.

Any clue what this means and how I can fix it? Thanks a lot!

To me that appimage just looks broken unfortunately.

I can run it with --no-sandbox though…