15.04.2021, 11:12
Thank you Selur for kicking me into the right direction. You helped me as always!
It was my mistake. I didn't make all the tools' files executable before starting Hybrid. I already forget this to be necessary since the time I installed Hybrid the last time.
But now I have trouble to build the Vapoursynth plugins. I will post that into the "Install Hybrid on Ubuntu 18.04 VNC" thread which seems to be more appropriate for that.
It was my mistake. I didn't make all the tools' files executable before starting Hybrid. I already forget this to be necessary since the time I installed Hybrid the last time.
But now I have trouble to build the Vapoursynth plugins. I will post that into the "Install Hybrid on Ubuntu 18.04 VNC" thread which seems to be more appropriate for that.