I have a RAR archive file, and I get this "Prefix found" error message when I try to extract its contents using the built-in Archive Manager (file-roller 3.28.0) in Ubuntu 18.04:
I would assume that if it can read the archive's file list, then it could also extract the files. I was able to extract the file using the unrar
command in the terminal, but I would still like to know what's wrong with Archive Manager, and if there's a way to fix it so that it can extract RAR files.
This problem depends on missing "unrar" package. To solve on "debian like" system:
or
When you install unrar in Ubuntu, it came with unrar-free too. This not should be a problem.
You're problem might be caused by permissions restrictions.
Try to use unrar from a terminal with:
This will unrar the .rar file in the same directory of the file.