I got this after killing myself with a grenade on the night mission. The game froze after I received the message.

'...call bis_fnc_param;

_respawn = 0 call |#|bis_fnc_missionRespawnType;

File A3\functions_f\respawn\fn_selectRespawnTemplate.sqf, line 19

_isDeath =...'
Error Undefined variable in expression: bis_fnc_missionrespawntype {F20423}