The fix for this issue is available in the latest update of InDesign version 15.0.3
Please update your InDesign application to this version to get the fix.
Adobe InDesign team
An error occurred while saving the commentAnonymous commented
This same error comes when I try export 2 files with text and pictures. . 53 pages. version 15.1.2
(picture in finnish, but error is Failed to export the PDF file)