update mod.conf

init.lua

@@ -356,7 +356,7 @@ minetest.override_item("default:mese", {
 -- add lucky blocks (if damage and stamina active)
 if minetest.get_modpath("lucky_block") then
 
-	local MP = minetest.get_modpath(minetest.get_current_modname())
+	local MP = minetest.get_modpath("playerplus")
 
 	dofile(MP .. "/lucky_block.lua")
 end

mod.conf

@@ -1,4 +1,4 @@
 name = playerplus
-depends =
-optional_depends = default, 3d_armor, player_monoids, pova, lucky_block
 description = Add speed effects, suffocation and cactus damage to players.
+optional_depends = default, 3d_armor, player_monoids, pova, lucky_block
+min_minetest_version = 5.0