: runtime error: invalid memory address or nil pointer dereference

[tablecell]

package main

import (
"github.com/dinever/golf"
 
)

 

func pageHandler(ctx *golf.Context) {
	ctx.Send("Page: " + ctx.Param("page"))
}
func main() {
	app := golf.New()

	 
	app.Get("/p/:page/", pageHandler)
	app.Run(":9000")
}

visit http://localhost:9000/p/