Hello, I did build libguestfs from source now. But still get the same error, when I run "./run libguestfs-test-tool". So the problem is not the prebuilt ubuntu package. I have attached the error message as a txt file. Can you please help me with this. I also tried installing a different kernel, but that didn't help. I am working on a machine with Ubuntu 22.04 and a Linux LTS kernel version 5.15 Regards Maximilian ………………………………………………… Maximilian Kirschner Wissenschaftlicher Mitarbeiter | Research Scientist Embedded Systems and Sensor Engineering (ESS) FZI Forschungszentrum Informatik Haid-und-Neu-Str. 10–14 76131 Karlsruhe, Germany Tel.: +49 721 9654-186 kirschner@fzi.de www.fzi.de/team/maximilian-kirschner www.fzi.de | www.twitter.com/FZI_official | www.linkedin.com/company/fzi-official | www.youtube.com/FZIchannel ………………………………………………… FZI Forschungszentrum Informatik Stiftung des bürgerlichen Rechts Stiftung Az: 14-0563.1 Regierungspräsidium Karlsruhe Vorstand: Prof. Dr. Stefan Nickel, Jan Wiesenberger, Prof. Dr.-Ing. J. Marius Zöllner Vorsitzender des Kuratoriums: Prof. Dr. Thomas Hirth …………………………………………………