ayy i had the same problem and i figured out why. someone touched on it in comments. it's because your 7zip is on a drive that doesn't have enough space for the files it's extracting as it's running them through that drive. fix i did was i opened up the zipped file and extracted a few files at a time. another fix could be to move 7zip to the bigger drive so you have extra room to extract with (i did not do this, myself so i'm not 100% on that).