Troubleshooting the 'App Already Bootstrapped with this Element' Error in AngularJS

When I try to load my AngularJS app, I encounter the following error:

Uncaught Error: [ng:btstrpd] App Already Bootstrapped with this Element '<html lang="en" ng-app="app" class="ng-scope">'

I have only placed ng-app once in the html element within _Layout.cshtml (ASP.NET MVC), and I do not utilize angular.bootstrap as indicated in the issue discussed here. How can I go about debugging this problem (using F12, Firebug, Chrome...)?

Answer №1

Here is a recommended approach:

  • First, download the unminified version of Angular source code.
  • Next, update the script tag to point to the unminified Angular source or configure a sourcemap from the minified code to the unminified one.
  • Add a breakpoint inside the angular.bootstrap method definition.
  • Utilize the call stack to track back to the source(s) of the call(s).

For more information and resources, you can refer to:

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