CRON error (wpforo_ai_cleanup_expired_cache)

Hi.

I run wpForo latest, didn’t enabled any AI features. WordPress latest and php 8.2.x

the Error is

[18-May-2026 23:25:21 UTC] Cron reschedule event error for hook: wpforo_ai_cleanup_expired_cache, Error code: could_not_set, Error message: The cron event list could not be saved., Data: {“schedule”:”hourly”,”args”:[],”interval”:3600}

Any ideas?

Thanks