Oh Sorry it's my mistake, i make two file there is index.html and client.lua the source code on the post should be have 2 like this
index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Test</title>
</head>
<body>
<img src="https://www.kibrispdr.org/data/gta-v-wallpaper-27.jpg" width="1340px" height="670px">
</body>
</html>
client.lua
local screenWidth, screenHeight = guiGetScreenSize()
local page = "http://mta/local/index.html"
local webBrowser = guiCreateBrowser(0, 0, screenWidth, screenHeight, true, true, false)
local theBrowser = guiGetBrowser(webBrowser)
addEventHandler("onClientBrowserCreated", theBrowser,
function()
loadBrowserURL(source, page)
showCursor(true)
end)