Standard zip tools built into Windows or macOS often struggle with multi-part RARs. It is best to use specialized software: The original tool for this format.
This usually means one of the parts was corrupted during download. You may need to redownload the specific part mentioned in the error log. pack.part01.rar
Many RAR packs (especially from forums or archives) are password-protected. Check the source where you found the links for the required key. Standard zip tools built into Windows or macOS