Got an error when updating space exploration save to 0.7 in 2.0 due to this mod.

Here's the error code.

Error while running event Repair_Turret::on_object_destroy(ID 176)
Repair_Turret/script/repair_turret.lua:170:attempt to index field "turrets" (a
nil value)
stack traceback:
Repair_Turret/script/repair_turret.lua:170: in function "get_turret"
Repair_Turret/script/repair_turret.lua:1157: in function "handler"
core/lualib/event_handler.lua72: in function
<core/lualib/event_handler.lua:70>

Hope you can help with this