If you were trying to run a test booking on your event, and ran into this error - Your destination account needs to have at least one of the following capabilities enabled: transfers, crypto_transfers, legacy payments - don't worry, as it is easy to fix!
This simply means that you haven't yet connected a receiving bank account or debit card to your Stripe Express Connect account.
In order to fix this, go to 'Settings' > 'Bank/Finance' > 'STRIPE DASHBOARD'. Here, you can follow the steps to add a receiving bank account, allowing you to process and receive payments.