Hi @Aliyah Heinze-Giardello ,
This issue cannot be reproduced from my end. There is no official document addressing similar issue.
May be you could try it from the following points:
1.Try to clear browser cache then restart it.
2.Try to use a different browser or your browser's InPrivate mode to see if the same error occurs.
3.Are other users with permissions facing the same problem? View through another computer or account.
4.Whether all SharePoint calendar view have the same problem? You could create a new SharePoint calendar view in another list to check.
5.Check if the same issue occurs with other SharePoint site collections.
Then please let me know the troubleshooting result please?
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.