error_log file has entries “The cron event list could not be saved.”

The error_log file for WordPress contains the below entries. The site has not gone live yet and just has a few test users in it. The Recontre plug-in works perfectly well from a testing point of view. Are there lines in the error log anything to be concerned about?

16-Mar-2023 00:19:32 UTC] Cron reschedule event error for hook: puc_cron_check_updates-rencontreP, Error code: could_not_set, Error message: The cron event list could not be saved., Data: {“schedule”:”twicedaily”,”args”:[],”interval”:43200}

[17-Mar-2023 00:21:35 UTC] Cron reschedule event error for hook: action_scheduler_run_queue, Error code: could_not_set, Error message: The cron event list could not be saved., Data: {“schedule”:”every_minute”,”args”:[“WP Cron”],”interval”:60}

[17-Mar-2023 10:25:21 UTC] Cron reschedule event error for hook: action_scheduler_run_queue, Error code: could_not_set, Error message: The cron event list could not be saved., Data: {“schedule”:”every_minute”,”args”:[“WP Cron”],”interval”:60}