连接reset的时候会出现崩溃

[fruitbars]

对应的代码应该在这：
chat.go中

_, msg, err := conn.ReadMessage()
if err != nil {
fmt.Println("read message error:", err)
break
}

报错和崩溃信息：
2024/04/24 17:00:24 read tcp 10.1.194.5:63162->114.118.65.75:443: read: connection reset by peer
read message error: read tcp 10.1.194.5:63153->114.118.65.75:443: read: connection reset by peer
read message error: read tcp 10.1.194.5:63147->114.118.65.75:443: read: connection reset by peer
read message error: read tcp 10.1.194.5:63161->114.118.65.75:443: read: connection reset by peer
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x2 addr=0x18 pc=0x100953110]