2020-03-06 18:43:59: ACTION[Server]: LuaEntitySAO at (-211,8.5,-206) (id=33, hp=10) punched LuaEntitySAO at (-211,8.5,-206) (id=33, hp=10), damage=0
2020-03-06 18:43:59: ERROR[Main]: ServerError: AsyncErr: ServerThread::run Lua: Runtime error from mod 'default' in callback node_on_timer(): /usr/share/minetest/builtin/common/vector.lua:98: attempt to perform arithmetic on local 'b' (a nil value)
2020-03-06 18:43:59: ERROR[Main]: stack traceback:
2020-03-06 18:43:59: ERROR[Main]:       /usr/share/minetest/builtin/common/vector.lua:98: in function 'add'
2020-03-06 18:43:59: ERROR[Main]:       /usr/share/minetest/games/minetest_game/mods/tnt/init.lua:141: in function 'calc_velocity'
2020-03-06 18:43:59: ERROR[Main]:       /usr/share/minetest/games/minetest_game/mods/tnt/init.lua:189: in function 'entity_physics'
2020-03-06 18:43:59: ERROR[Main]:       /usr/share/minetest/games/minetest_game/mods/tnt/init.lua:411: in function 'boom'
2020-03-06 18:43:59: ERROR[Main]:       /usr/share/minetest/games/minetest_game/mods/tnt/init.lua:671: in function </usr/share/minetest/games/minetest_game/mods/tnt/init.lua:670>
2020-03-06 18:43:59: ACTION[Server]: singleplayer leaves game. List of players:
2020-03-06 18:43:59: ACTION[Main]: Server: Shutting down
terminate called after throwing an instance of 'LuaError'
  what():  Runtime error from mod 'mobs_animal' in callback luaentity_GetStaticdata(): /usr/share/minetest/builtin/common/serialize.lua:151: Can't serialize data of type userdata
stack traceback:
        [C]: in function 'error'
        /usr/share/minetest/builtin/common/serialize.lua:151: in function 'dump_or_ref_val'
        /usr/share/minetest/builtin/common/serialize.lua:146: in function 'dump_or_ref_val'
        /usr/share/minetest/builtin/common/serialize.lua:146: in function 'dump_or_ref_val'
        /usr/share/minetest/builtin/common/serialize.lua:166: in function </usr/share/minetest/builtin/common/serialize.lua:20>
Aborted