solved: the recipe for grain_packet conflicts with the recipe for bonemeal:mulch

.luacheckrc

@@ -1,31 +0,0 @@
-unused_args = false
-allow_defined_top = false
-max_line_length = false
-
-globals = {
-    "minetest",
-    "mobkit",
-    "mokapi",
-    "petz",
-    "stairs",
-    "farming",
-    "player_api",
-    "hunger_ng",
-    "dye",
-    "armor",
-    "playerphysics",
-    "player_monoids",
-    "awards"
-}
-
-read_globals = {
-    string = {fields = {"split"}},
-    table = {fields = {"copy", "getn"}},
-
-    -- Builtin
-    "vector", "ItemStack",
-    "dump", "DIR_DELIM", "VoxelArea", "Settings",
-
-    -- MTG
-    "default", "sfinv", "creative",
-}

mokapi/api/api_drops.lua

@@ -47,7 +47,7 @@ function mokapi.drop_items(self, killed_by_player)
 		if math.random(1, self.drops[n].chance) == 1 then
 			num = math.random(self.drops[n].min or 0, self.drops[n].max or 1)
 			item = self.drops[n].name
-			if killed_by_player then	-- only drop rare items (drops.min=0) if killed by player
+			if killed_by_player then --only drop rare items (drops.min=0) if killed by player
 				obj = minetest.add_item(pos, ItemStack(item .. " " .. num))
 			elseif self.drops[n].min ~= 0 then
 				obj = minetest.add_item(pos, ItemStack(item .. " " .. num))