There are multiple factors, both internal and external to InDesign application, that can lead to document corruption. However, we can take a look and see if the file can be repaired. Please email your InDesign file to firstname.lastname@example.org. We will take a look at the document.
If the file is larger than 10 Mb, you can zip (and password protect) the file and upload to Creative Cloud account (or Dropbox/Wetransfer/GoogleDrive) and send us the document link.
Adobe InDesign teamMallory commented
I have this same error and have no idea how to fix it. I've sent an email with a link to my file based on your advice here, and am waiting for a response.
Is there no way for us to troubleshoot on our own end?