iCloud Calendar suddenly blank on MacBook

Hi kelownagurl,

We appreciate you reaching out to us.

Below are some steps that you can try if you don’t see your events in Calendar on your Mac.

• "Make sure the calendar that contains the event has a checkmark by its name.
• Make sure your calendar account is still set up. For example, if you turn off the iCloud Calendar feature in iCloud settings or Internet Accounts settings (or sign out of iCloud in iCloud settings), you won’t see your iCloud calendars in Calendar. See Change iCloud feature settings.
• Scroll your calendar to see more dates and times.
• If your declined events disappear from Calendar, and you want to see them again, choose View > Show Declined Events.
• Search for events in the Calendar search field.
• If you don’t see your all-day events, make sure Show All-Day Events has a checkmark beside it in the View menu.
• If you changed the time zone for an event or changed the Calendar time zone, make sure you’re looking for the event at the correct time. Calendar adjusts where the event appears based on the time zone.
• Make sure your computer’s date, time, and time zone are set correctly in Date & Time settings."

You can use the article below as a reference.

If you don’t see your events in Calendar on Mac - Apple Support

Take care!