Google Chrome Extension: captureVisibleTab problem -


I'm trying to capture the current view tab but I'm getting undefined. When the extension's icon is pressed, the following code is executing. When the warning is called, I see undefined instead of the URL. 

  ChromeBrowser Action .onclicked.addListener (function) {chrome.windows.getCurrent (function) {chrome.tabs.captureVisibleTab (win.id, {"format": "Png"}, function (imgUrl) {warning (imgUrl);});});});   
 What should I do to get the URL of the captured image? Someone please help me  
 Thank you!   
 
 
 I think your code has been taken from the example given on the Chrome extension website and yes, it There is a buggy.  
 Change the permission attribute inside this manifest.json:  
  "Permissions": ["Tab", "& lt; all_urls" ]   
 Cheers, David

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