Unwanted text showing up on website

Question:
I am stumped and looking for help. Yesterday I updated my Products pages and Cart. Prior, customers would click a link on the Cart page to upload images (link was to a JotForm). I removed that and instead, added the Uploadly upload button to my Products page.
Now, on my cart (and just on a computer (tried multiple and having same issue), there is weird text on the left and what looks like a link to upload. I have searched everywhere, including my Lightboxes and can’t find where this is coming from.

You can see in the attached image where it displays “Click below to upload your image” and a random “K” and “L”.

Any suggestions or thoughts would be welcomed.
TIA!

Perhaps it has something to do with the Uploadly button? The text might be cut off and might say “Link” in full? What you could do is make a new website (or duplicate it) and see if the error happens again?