Anyone getting this error when trying to trade?

https://preview.redd.it/gfxkwebm1r2h1.png?width=1221&format=png&auto=webp&s=9eaefba37bce0993c69221c2ae49b11fddaacc98

Hello so I went to send a trade and as you can see I get "An unknown error occurred." where I'm supposed to be able to select other items to send the trade. Previously the other items in the trade showed up normally and I could select them to send but now they aren't? I believe this is a new error can anyone tell me any fix's for it? One theory I have is it's maybe to do with my RblxTrade server ip, like maybe the server ip im on is giving it issues for some reason? Or perhaps wifi, I'm not sure let me know if you can help.