Error: [$injector:unpr] Unknown provider: eProvider <- e

[ko0f]

After integrating and running, console shows this error -

angular.js:14800 Error: [$injector:unpr] Unknown provider: eProvider <- e
http://errors.angularjs.org/1.6.9/$injector/unpr?p0=eProvider%20%3C-%20e
    at angular.js:116
    at angular.js:4887
    at Object.getService [as get] (angular.js:5047)
    at angular.js:4892
    at getService (angular.js:5047)
    at injectionArgs (angular.js:5072)
    at Object.invoke (angular.js:5098)
    at $controllerInit (angular.js:11076)
    at nodeLinkFn (angular.js:9939)
    at angular.js:10347

Any idea what's the issue?