Just posting a fix that worked for me:
For anyone else trying to make it work. I manually downloaded all the linux_x86_64 codecs and then put them in the folder “Codecs/e613bce-97f23d579c1001d8e9cc0d2e-linux-x86_64”. Seems to have done the trick…
https://downloads.plex.tv/codecs/e613bce-97f23d579c1001d8e9cc0d2e/linux-x86_64-standard/libaac_decoder.so
https://downloads.plex.tv/codecs/e613bce-97f23d579c1001d8e9cc0d2e/linux-x86_64-standard/libaac_encoder.so
https://downloads.plex.tv/codecs/e613bce-97f23d579c1001d8e9cc0d2e/linux-x86_64-standard/libac3_decoder.so
https://downloads.plex.tv/codecs/e613bce-97f23d579c1001d8e9cc0d2e/linux-x86_64-standard/libac3_encoder.so
https://downloads.plex.tv/codecs/e613bce-97f23d579c1001d8e9cc0d2e/linux-x86_64-standard/libdca_decoder.so
https://downloads.plex.tv/codecs/e613bce-97f23d579c1001d8e9cc0d2e/linux-x86_64-standard/libh264_decoder.so
https://downloads.plex.tv/codecs/e613bce-97f23d579c1001d8e9cc0d2e/linux-x86_64-standard/libhevc_decoder.so
https://downloads.plex.tv/codecs/e613bce-97f23d579c1001d8e9cc0d2e/linux-x86_64-standard/liblibx264_encoder.so
https://downloads.plex.tv/codecs/e613bce-97f23d579c1001d8e9cc0d2e/linux-x86_64-standard/libmp2_decoder.so
https://downloads.plex.tv/codecs/e613bce-97f23d579c1001d8e9cc0d2e/linux-x86_64-standard/libmp3_decoder.so
https://downloads.plex.tv/codecs/e613bce-97f23d579c1001d8e9cc0d2e/linux-x86_64-standard/libmpeg2video_decoder.so
https://downloads.plex.tv/codecs/e613bce-97f23d579c1001d8e9cc0d2e/linux-x86_64-standard/libmpeg4_decoder.so
https://downloads.plex.tv/codecs/e613bce-97f23d579c1001d8e9cc0d2e/linux-x86_64-standard/libmsmpeg4v3_decoder.so
https://downloads.plex.tv/codecs/e613bce-97f23d579c1001d8e9cc0d2e/linux-x86_64-standard/libvp9_decoder.so
