Handle parse errors in reward message by adding to world_state.error_messages.
Handle parse errors in reward message by adding to world_state.error_messages.

murven/malmo,tnarik/malmo,murven/malmo,murven/malmo,tnarik/malmo,tnarik/malmo,murven/malmo,tnarik/malmo,tnarik/malmo,murven/malmo