Existing world loading gets stuck at 100% at singleplayer world when installing this mod but it gets fixed when removing this mod. And yes I did install its dependency mod coroutill I think its name is? So yeah the world is not loading.

It sounds similar to my issue, #98
You could try using a tool like MCA Selector to edit chunk data to remove the item frame entity and see if that fixes it.

Until I backport a proper fix I'll recommend that freeze-fix mod for now #98 (comment)