Snap vivictpp, no video output, Ubuntu 20.04

Use : Ubuntu 20.04, snap vivictpp installed via "Ubuntu Software"

I use the snap to compare locale files, e.g.: vivictpp "Die Geistervilla.mp4" "Die Geistervilla 22.mp4". The first file is h.262 coded, the second file h.265. After starting the snap, I will get the info :

"/usr/share/libdrm/amdgpu.ids: No such file or directory" and have no video output.

I did check the respective folder, but the file is present.

Now I have no idea, what to do, is there someone who can help. If additional information will be needed, ask me, I will add it.

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