Genshin Impact .pck

[Mysticus]

I tried to extract pck files using WWise Unpacker, but not every sounds are extracted.
It says "Parse error: expected 0x42 fmb if vorb missing" for some files.
Any help is very appreciated.

[aluigi]

Both these scripts seem to work:
http://aluigi.org/bms/akpk_avengers.bms
http://aluigi.org/bms/apb_pck.bms