There are a few things you could try:
1. Test extraction with a different program (7zip, winrar, etc.)
2. Test on a different pc if available
3. Test redownloading the files and extracting again
4. Ensure the download isn't getting interrupted (check size of archive, if it's super small it's likely failing due to Internet connection)
5. Download the folder and drag the contents to your desktop or into another folder, or right click it and extract it to another folder
6. Check to see if your firewall is blocking one of the files
Let me know if any of these work! If none of these do, you could also look up some commands to input into the command prompt.