I don't think this is a bug but if I do some validation in toTwilio() in my notification, if I return null or false, it errors:
NotificationChannels\Twilio\Exceptions\CouldNotSendNotification :
Notification was not sent. Message object class `Unknown` is invalid. It should be either `NotificationChannels\Twilio\TwilioSmsMessage` or `NotificationChannels\Twilio\TwilioCallMessage`
I don't think this is a bug but if I do some validation in toTwilio() in my notification, if I return null or false, it errors: