Hybrid Crashes on Arch

[Selur]

I installed the Manjaro plugins, ..

That doesn't say anything to me.

Seems like lsmashsource is missing.
You either need to install it, or if you installed for example BestSource, you can tell Hybrid under "Filtering->Vapoursynth->Misc->Source->Prefer BestSource" to use that.

You should check the Vapoursynth Preview and install missing plugins until it works.

Cu Selur