A group of Microsoft Products and technologies used for sharing and managing content, knowledge, and applications.
Hello Ini Nkanga,
Thank you for posting back and sharing with me the detailed information.
I understand this error only happens with the particular folder and all users have this issue.
To do further troubleshooting, you may try copying this folder to a different library in the same SharePoint site, or to a library in a different SharePoint site, then check if you can open the copy.
This way helps you determine if the folder itself has problem or the original SharePoint site has problem.
Welcome to post back if you have any update, I'll be glad to help you further.
Thanks for your time and cooperation!
Best regards,
Tina