error `slot` attributes are deprecated vueno-deprecated-slot

error slot The `slot` attribute is used to define named slots in a Vue component. However, this attribute has been deprecated in favor of the `v-slot` directive since Vue.js 2.6.0. The `v. The slot cannot be created as you are connected to a replica. Common cloud implementations of PostgreSQL do not allow the addition of logical slots on replicas.

errorslot, When scheduling a class from an item and selecting the start date from the calendar, a validation error is received: Validation Error.