I have been having the exact same issue for a few months now (can't get an exact date).
I have a bunch of SSL certificates which are less than 30 days, using File verification.
CRON Script:
/www/server/panel/pyenv/bin/python -u /www/server/panel/class/acme_v2.py --renew=1
Logs:
|-No SSL certificate found within 30 days!
|-All tasks have been processed!
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★[2024-09-19 09:24:03] Successful
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Using panel version 7.0.9