Tentative de correction d'un crash

init.lua

@@ -191,13 +191,15 @@ end
 -- tool break sound  + autorefill
 function refill(player, stck_name, index)
 	local inv = player:get_inventory()
-	for i,stack in ipairs(inv:get_list("main")) do
-		if stack:get_name() == stck_name then
-			inv:set_stack("main", index, stack)
-			stack:clear()
-			inv:set_stack("main", i, stack)
-			minetest.log("action", "Inventory Tweaks: refilled stack("..stck_name..") of "  .. player:get_player_name()  )
-			return
+	if inv:get_list("main") then
+		for i,stack in ipairs(inv:get_list("main")) do
+			if stack:get_name() == stck_name then
+				inv:set_stack("main", index, stack)
+				stack:clear()
+				inv:set_stack("main", i, stack)
+				minetest.log("action", "Inventory Tweaks: refilled stack("..stck_name..") of "  .. player:get_player_name()  )
+				return
+			end
 		end
 	end
 end
@@ -272,6 +274,14 @@ minetest.register_on_dignode(function(pos, oldnode, digger)
 	if not old and tname == "" then
 		old = 0
 	end
+	--debug
+	if not old then
+		old = 0
+		print("Debug invtweak: OLD is nil\nplayer is ")
+		print(name)
+		print("\nname is ")
+		print(tname)
+	end
 	local new = item:get_wear()
 
 	if old ~= new then