Indesign 2022 freezes (NOT RESPONDING) on export to reflowable ePub

I have successfully exported to ePub many times in earlier versions of Indesign. I created an Indesign file in v. 17.2 (now updated to 17.2.1) and I cannot get it to export. Beachball every time.

I read one thread that indicated the cause of crashing on export might be due to proprietary fonts. I changed all the fonts in my paragraph styles to ones I have used in the past. Still no go. What has changed? I converted an older INDD file to INDD2022 that had been previously exported from INDD2021 to ePub 2.0, and it exported fine from 17.2.1. However, the file I created in INDD2022 will not export. Any ideas?