it's a known issue of Bannerlord when using RTS Camera mod. It has been reported here: https://www.nexusmods.com/mountandblade2bannerlord/mods/355?tab=bugs&BH=1 and here: https://forums.taleworlds.com/index.php?threads/e1-1-1-crash-when-player-agent-is-controlled-by-ai-and-issued-an-order-to-stop-using-siege-machine.416924/