Ionic CLI - component is not a known element

[rindra]

i have similar problem and this an alternate solution:
i import custom component’s module to page’s module where i am trying to import following this:

Creating and Using New Component from Ionic CLI

If your module uses Ionic, import IonicModule. Basically this means: if your module only has pure Angular, like pipes or providers, you don’t need IonicModule. But if you’re using Ionic for html, then you need it. For example:

and it work too