Google Chrome-Erweiterung zeigt das Popup nicht

Question

Das Problem ist, dass, wenn ich auf das Symbol klicke, es überhaupt nichts zeigt.

manifest.json

{ 
    "manifest_version": 2, 
    "name"   : "My cool plugin", // the name of the extension 
    "version"   : "1.0"    , // version number 
    "description"  : "My cool plugin", // description used in the Chrome Webstore 
    "background": "background.html", 
    "browser_action" : { 
    "default_title": "My cool plugin", 
     "default_icon" : "icon.png",  // specifies the default icon 
     "popup"   : "popup.html" // the page to show when the icon is clicked 
    }, 
    "permissions": [ 
    "tabs", 
    "http://*/", 
    "https://*/*" 
    ] 
} 

popup.html und background.html

<div> 
    Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod 
    tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, 
    quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo 
    consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse 
    cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non 
    proident, sunt in culpa qui officia deserunt mollit anim id est laborum. 
</div> 

Was ist das Problem?

Answer 1

es ist "default_popup": "popup.html" nicht "Pop-up"

https://developer.chrome.com/extensions/browserAction.html