Barcode scanner help

Hi guys!

I want to integrate a barcode scanner for my nutrition tracking app for school. However, I think because of the most recent update and the newest SDK, it does not work anymore. I tried everything, barcode scanner, camera native, it just does not seem to work. I use ChatGPT, a LOT, but I still know a thing or two, but I just can't figure this out. Can you guys help me out and give me some tips, maybe tell me what I can use instead? I tried camera as well but I get errors regarding some strings that make no sense to me. In the end, I have removed all the code because it corrupted my project, I do not know exactly what type of interferences there were. Barcode scanner for example, made a screen of mine not be found for some reason. So, my final question is, what can I use to make a barcode scanner with a working camera? I would appreciate any suggestion. I will leave the Git of the project here for anyone with skills to take a look, I hope I have uploaded it appropriately: https://github.com/StefanRaresDragomir/licenta