I can not restore devices after updating to Catalina.

I have restored phones before in iTunes, but the restoring process is now done through Finder in Catalina. I tried restoring both and iPhone 8 Plus and an SE, but each would get the the extracting stage and go out of recovery mode right as the process was about to finish. I tried restoring them through iTunes on a Windows computer, and I had the same problem with the error 4013. I used a genuine Apple cable that was in good condition, and I tried other cables as well. I also tried just restoring from an already download IPSW file, but this had the same result. I called Apple after my initial attempt in November, and the rep I spoke to told me the engineers were working on the problem and that I should update the OS when a new update comes out and try again. I updated the OS and just tried again this week, but I got the same result. I was wondering if anybody else had this problem or knows if there is a solution or if it is still an Apple issue. Thank you