Ionic 2 Beta 8. EXCEPTION: No provider for Navbar! (Solved)

Hi!

After upgrading Ionic from Beta 6 to 7 and also in Beta 8 I get this error: browser_adapter.js:84EXCEPTION: No provider for Navbar!. I followed all steps of Changelog and looked to conference app example but I don’t know why this happens. Please help, thank you.

Finally solved the issue updating to Beta 10.