https://developer.nextmoe.dev/problems/chat/chat-not-accepting
对方不接收私信
CHAT_NOT_ACCEPTING HTTP 403私信对方的设置不允许调用者直接进入收件箱，也不接受消息请求；或者调用者的账号太新，还不能发消息请求。detail 会说明是哪一种。
Canonical (English)
Not accepting messages
The recipient's settings do not let the caller reach their inbox or send a message request, or the caller's account is too new to send requests. detail says which.