Stack

/usr/local/go/src/runtime/panic.go:969
/Users/zhouyi/go/src/github.com/astaxie/beego/template.go:75
/Users/zhouyi/go/src/github.com/astaxie/beego/controller.go:306
/Users/zhouyi/go/src/github.com/astaxie/beego/controller.go:257
/Users/zhouyi/go/src/github.com/astaxie/beego/controller.go:237
/Users/zhouyi/go/src/github.com/astaxie/beego/router.go:865
/usr/local/go/src/net/http/server.go:2843
/usr/local/go/src/net/http/server.go:1925
/usr/local/go/src/runtime/asm_amd64.s:1374