Hi @Iniobong Nkanga,How did you access the documents, via shared links? If you accessed the documents through shared links, please check whether the link has expired. It's also possible that the SharePoint site is temporarily down or has been moved to a new web address. Check with your SharePoint administrator to see if there are any known issues.
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.