Why am I getting an error in the content pane of the Firefox Addon SDK script?

Question

Getting the following error, even after deleting the empty script, I go this error.

console.error: my-addon: Message: SyntaxError: expected expression, got end of script 

Panel code of my addon:

 var { ToggleButton } = require('sdk/ui/button/toggle'); var panels = require("sdk/panel"); var self = require("sdk/self"); var ss = require("sdk/simple-storage"); var button = ToggleButton({ id: "my-addon", label: "My Addon", icon: { "16": "./img/16-16.png", "32": "./img/32-32.png", "64": "./img/64-64.png" }, onChange: handleChange }); var panel = panels.Panel({ contentURL: self.data.url("popup.html"), contentScript: self.data.url("js/pop_listener.js"), onHide: handleHide, width: 300, height: 550 }); 

Answer 1

Use contentScriptFile instead of contentScript