White plastic piece with spring attached makes loud snapping noise on Pro 100

[annel]

Hi. I purchased a Pro 100 on Facebook marketplace and it appears to be defective. There is a white plastic piece inside right near the two sponge pads that the print head sits on. When the carriage moves that white plastic piece makes a loud snapping noise repeatedly and the printer goes into an error state. The orange light flashes 11 times which is supposedly either wrong paper size or something to do with print head alignment. It definitely has nothing to do with paper size because I can't even get that far. I'm guessing it is a mechanical issue that I would not be able to fix but I am out 150 dollars so was wondering if anyone might have any ideas. Thanks!