We have been able to reproduce the issue and it is currently under investigation.
Customers facing similar issue, Please share the document with firstname.lastname@example.org
Adobe InDesign team
An error occurred while saving the commentLisa commented
I'm having the same issue now after upgrading to Big Sur. Everytime I want to copy and paste something from illustrator into indesign my illustrator crashes - everytime! Is there a fix to this? Seams like an old issue?