debug: wrap main() in pcall to show crash error before window closes

inventoryManager.lua

@@ -685,4 +685,9 @@ local function main()
     )
 end
 
-main()
+local ok, err = pcall(main)
+if not ok then
+    printError(tostring(err))
+    print("Press any key to exit...")
+    os.pullEvent("key")
+end