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Error: ng:btstrpd
App Already Bootstrapped with this Element

App already bootstrapped with this element '<body ng-app="" class="ng-scope">'

Description

Occurs when calling angular.bootstrap on an element that has already been bootstrapped.

This usually happens when you accidentally use both ng-app and angular.bootstrap to bootstrap an application.

<html>
...
  <body ng-app="myApp">
    <script>
      angular.bootstrap(document.body, ['myApp']);
    </script>
  </body>
</html>

Note that for bootstrapping purposes, the <html> element is the same as document, so the following will also throw an error.

<html>
...
<script>
  angular.bootstrap(document, ['myApp']);
</script>
</html>

You can also get this error if you accidentally load AngularJS itself more than once.

<html ng-app>
  <head>
    <script src="angular.js"></script>

    ...

  </head>
  <body>

    ...

    <script src="angular.js"></script>
  </body>
</html>