This may not be script-related, but when I try to import a mesh into Roblox Studio it's fine with the file type, but it throws a wobbly and isn't able to upload. It keeps retrying automatically but after a while it shows a message that says it took too manyb retries.
This is against the rules dude. Did you even read them? This is not a site for helping builders. Go to the dev forum if you want that.