hey ya'll. just to let you know I was having a similar error on LE Generic x86 64 v9.2.1. ScummVM was throwing this error on run:
Code
2020-03-21 19:43:47.053 T:139660604663936 ERROR: AddOnLog: ScummVM: Unable to load: /storage/.kodi/addons/game.libretro.scummvm/game.libretro.scummvm.so: undefined symbol: _ZN3GUI13OptionsDialog16setupGraphicsTabEv
2020-03-21 19:43:47.053 T:139660604663936 ERROR: AddOnLog: ScummVM: Failed to load /storage/.kodi/addons/game.libretro.scummvm/game.libretro.scummvm.so
2020-03-21 19:43:47.053 T:139660604663936 ERROR: ADDON: Dll ScummVM - Client returned bad status (5) from Create and is not usable
2020-03-21 19:43:48.810 T:139660604663936 ERROR: RetroPlayer[PLAYER]: Failed to initialize game.libretro.scummvm
Milhouses ScummVM generic build does the trick @ milhouse.libreelec.tv/builds/scummvm/
Full link: game.libretro.scummvm-999.2.0.0.6.2.zip
Install from ZIP, disable auto-update. Should be all working now when launching games via IAGL.