Jetpack problem Event schedule does not exist

Hello, I’m trying to install a Theme (Alceste) and the installation always comes with a 500 error. The error_log file says exactly:

[06-Aug-2023 06:47:00 UTC] Cron reschedule event error for hook: nfd_data_sync_cron, Error code: invalid_schedule, Error message: Event schedule does not exist., Data: {“schedule”:”minutely”,”args”:[],”interval”:60}
[06-Aug-2023 06:47:00 UTC] Cron reschedule event error for hook: action_scheduler_run_queue, Error code: invalid_schedule, Error message: Event schedule does not exist., Data: {“schedule”:”every_minute”,”args”:[“WP Cron”],”interval”:60}
[06-Aug-2023 06:47:40 UTC] Cron reschedule event error for hook: jetpack_sync_cron, Error code: invalid_schedule, Error message: Event schedule does not exist., Data: {“schedule”:”jetpack_sync_interval”,”args”:[],”interval”:300}
[06-Aug-2023 06:47:40 UTC] Cron reschedule event error for hook: jetpack_sync_full_cron, Error code: invalid_schedule, Error message: Event schedule does not exist., Data: {“schedule”:”jetpack_sync_interval”,”args”:[],”interval”:300}


I’m totally lost about what to do next, and my Hosting server is not doing anything to dig deeply on the problem so.. here I am…. Thank you so much for your help

_JOSEMI