Taobao can't send private messages to each other as friends.

If the Taobao message in your friend can't be sent out, on the one hand, it may be because of your poor network environment that the message content can't be sent out, on the other hand, it may be because the other party has blacked you out, so when you send a Taobao message to the other party, the other party can't receive it at this time, and you can't send it either.