How incorporate a-frame in ionic?

hi, any can help me to create an enviroment in ionic with aframe please,
actually i have this Error :
Error: Template parse errors:
‘a-sphere’ is not a known element:

1. If ‘a-sphere’ is an Angular component, then verify that it is part of this module.
2. If ‘a-sphere’ is a Web Component then add ‘CUSTOM_ELEMENTS_SCHEMA’ to the ‘@NgModule.schemas’ of this component to suppress this message. ("
   

thanks,