Error: $injector:unpr Unknown Provider
This error results from the $injector being unable to resolve a required dependency. To fix this, make sure the dependency is defined and spelled correctly. For example: angular . module ( 'myApp' , []) . controller ( 'MyController' , [ 'myService' , function ( myService ) { // Do something with myService }]); The above code will fail with $injector : unpr if myService is not defined. For More visit https://docs.angularjs.org/error/$injector/unpr