mods/mobs_animal/chicken.lua

@@ -81,7 +81,7 @@ stepheight = 0.6,
 			return
 		end
 
-		local pos = self.object:get_pos()
+		local pos = self.object:get_pos() ; if not pos then return end
 
 		minetest.add_item(pos, "mobs:egg")
 

mods/stamina/init.lua

@@ -405,13 +405,13 @@ local function stamina_globaltimer(dtime)
 			local name = player:get_player_name()
 
 			-- damage player by 1 hp if saturation is < 2 (of 30)
-			if h < STAMINA_STARVE_LVL
+			if h and h < STAMINA_STARVE_LVL
 			and hp > 0 then
 				player:set_hp(hp - STAMINA_STARVE, {hunger = true})
 			end
 
 			-- don't heal if drowning or dead or poisoned
-			if h >= STAMINA_HEAL_LVL
+			if h and h >= STAMINA_HEAL_LVL
 			and h >= hp
 			and hp > 0
 			and air > 0