Bitmex is not working with his ws label.

[0xp3p3]

Status: 200, wallet amount: 1.5907141e+08
panic: websocket: close 1005 (no status)

goroutine 51 [running]:
github.com/vmpartner/bitmex/tools.CheckErr(0x145ae60, 0xc420203ec0)
        /Users/apple/go/src/github.com/vmpartner/bitmex/tools/tools.go:10 +0x4a
github.com/vmpartner/bitmex/websocket.ReadFromWSToChannel(0xc42050e3c0, 0xc420068a20)
        /Users/apple/go/src/github.com/vmpartner/bitmex/websocket/websocket.go:37 +0x65
created by main.main
        /Users/apple/go/src/github.com/vmpartner/bitmex/main.go:32 +0x2ec
exit status 2
appledeMacBook-Pro:bitmex apple$

I am using golang for Bitmex websocket.
but I am getting crash error as like this.
What is the issue?