How can I use Luv to implement an HTTP server?

[z1485671578]

I followed the instructions to use the return require "luv" to create a new uv.lua file, and then introduced luvit deps file, but I don't have luvi, so I don't know how to use luv to create an HTTP server.
the lua file content is:

local http = require("http")

local function onRequest(req, res)
  local body = "Hello world\n"
  res:setHeader("Content-Type", "text/plain")
  res:setHeader("Content-Length", #body)
  res:finish(body)
end

http.createServer(onRequest):listen(8080)
print("Server listening at http://localhost:8080/")

uv.run()

the error message is as follows：

Server listening at http://localhost:8080/
Uncaught Error: ...\MotionMaster\x64\Release\lua\stream\stream_readable.lua:810: attempt to index a nil value (global 'process')
stack traceback:
        ...\MotionMaster\x64\Release\lua\stream\stream_readable.lua:810: in upvalue 'resume'
        ...\MotionMaster\x64\Release\lua\stream\stream_readable.lua:802: in field 'resume'
        D:\Source\Repos\MotionMaster\x64\Release\lua\net.lua:183: in method 'resume'
        ...\MotionMaster\x64\Release\lua\stream\stream_readable.lua:767: in method 'on'
        D:\Source\Repos\MotionMaster\x64\Release\lua\http.lua:290: in function 'http.handleConnection'
        (...tail calls...)
        D:\Source\Repos\MotionMaster\x64\Release\lua\core.lua:248: in method 'emit'
        D:\Source\Repos\MotionMaster\x64\Release\lua\net.lua:331: in local 'handler'
        D:\Source\Repos\MotionMaster\x64\Release\lua\core.lua:248: in method 'emit'
        D:\Source\Repos\MotionMaster\x64\Release\lua\net.lua:280: in function <D:\Source\Repos\MotionMaster\x64\Release\lua\net.lua:276>
        [C]: in function 'luv.run'
        .../MotionMaster/x64/Release/Example/luv httpserver测试.lua:14: in main chunk

How can I fix it