I also get 'failed to export notes' when I try to export a (rather large) notebook. I only get it for one notebook, not to the other I've tried exporting. The export starts running, but after a while (about 50%, but hte number seems to vary if I try multiple times) I get the error. I right-click the notebook, then Export Notebook, to ENEX format. The error occurs wether I ask to split the file or not. The notebook is a shared notebook, but I didn't experience any issue with other shared notebooks. Export to html works (about 2 GB).
Any suggestion on how to make ENEX export work as well?
Context: Evernote 10.67.4-mac-ddl-public (20231204112355), Mac M1 with Sonoma 14.1.2