Every time I try to open my inventory from the overworld menu it freezes the game trying to open the inventory & I have to reload the page
Hmm, that is nasty. Can you open the bowser debug console (Ctr+shift+I) and see what is in there?
I'm not certain what's important but here's a screenshot of the debug menu.
Excellent! I have found the bug and released a hotfix. Your game should work without problems now.
Thank you!