Runtime error

[marcialwushu]

Runtime Error Object(...) is not a function

TypeError: Object(...) is not a function
    at SwitchMapSubscriber.project (http://localhost:8100/build/vendor.js:84902:76)
    at SwitchMapSubscriber._next (http://localhost:8100/build/vendor.js:58122:27)
    at SwitchMapSubscriber.Subscriber.next (http://localhost:8100/build/vendor.js:20750:18)
    at RefCountSubscriber.Subscriber._next (http://localhost:8100/build/vendor.js:20786:26)
    at RefCountSubscriber.Subscriber.next (http://localhost:8100/build/vendor.js:20750:18)
    at Subject.next (http://localhost:8100/build/vendor.js:23237:25)
    at ConnectableSubscriber.Subscriber._next (http://localhost:8100/build/vendor.js:20786:26)
    at ConnectableSubscriber.Subscriber.next (http://localhost:8100/build/vendor.js:20750:18)
    at Notification.observe (http://localhost:8100/build/vendor.js:50358:50)
    at AsyncAction.DelaySubscriber.dispatch (http://localhost:8100/build/vendor.js:69159:40)

I'm developing my first aplication with Ionic, and would like to display the firebase data at home.html, but when I start the serve show me this message in browser:

object(...) is not a function

[marcialwushu]

Are you sure that c.payload.val is a function and not an Object (holding data or maybe even holding a function)

[marcialwushu]

https://stackoverflow.com/questions/50478804/runtime-error-object-is-not-a-function