Function register_rest_route was called incorrectly. The REST API route definition for wp-rollback/v1/fetch-info is missing the required permission_callback argument. For REST API routes that are intended to be public, use __return_true as the permission callback. (This message was added in version 5.5.0.)
Bug Report
This was reported from WP.org: https://wordpress.org/support/topic/error-message-in-query-monitor-2
Function register_rest_route was called incorrectly. The REST API route definition for wp-rollback/v1/fetch-info is missing the required permission_callback argument. For REST API routes that are intended to be public, use __return_true as the permission callback. (This message was added in version 5.5.0.)