I am trying to upgrade my application from Angular14 to Angular19, and from Ionic6 to Ionic8. My app was working fine, but once upgraded, no ion component is recognizable. I am getting errors of this type : ‘ion-label’ is not a known element: 1. If ‘ion-label’ is an Angular component, then verify…

Upgrade from Angular 14 to Angular 19 and Ionic6 to Ionic8

peterjc January 2, 2025, 12:24pm 2

Perhaps the new Angular build system? That was my problem, see this post maybe its the same thing?

Topic		Replies	Views
Error NG8001: 'ion-header' is not a known element: 1. If 'ion-header' is an Angular component, then verify that it is part of this module. 2. If 'ion-header' is a Web Component then add 'CUSTOM_ELEMENTS_SCHE Ionic Framework	3	1476	February 14, 2024
Some ui component not work after update Ionic Framework	1	781	July 16, 2019
Angular + Ionic - Using ionic components returns 'not a known element' Ionic Angular	1	694	May 13, 2021
Upgrading to Angular 14 - Ionic declares lots of issues Ionic Angular	4	4794	July 30, 2022
'ion-app' is not a known element Ionic Angular	5	10838	October 11, 2023