chrome unpacked扩展错误：Manifest无效JSON。行：7，列：16，语法错误

here's the code:

这是代码:

{
"name": "Conjuguemos",
"description": "Learn Spanish, French, Italian, Portuguese, Latin, and German",
"version": "1.0.0",
"manifest_version": 2,
"icons": {
"128″: "icon_128.png"
},
"app": {
"urls": [
"https://conjuguemos.com/"
],
"launch": {
"web_url": “https://conjuguemos.com/"
}
}
}
{
"name": "Conjuguem