Ivy Compatibility?

[niemyjski]

Has anyone been able to upgrade to Angular 9?

I'm seeing the following error:

ERROR in Failed to compile entry-point ng2-ui-auth (es2015 as esm2015) due to compilation errors:
node_modules/@angular/common/http/http.d.ts:2801:22 - error NG6002: Appears in the NgModule.imports of Ng2UiAuthModule, but could not be resolved to an NgModule class.

This likely means that the library (@angular/common/http) which declares HttpClientModule has not been processed correctly by ngcc, or is not compatible with Angular Ivy. Check if a newer version of the library is available, and update if so. Also consider checking with the library's authors to see if the library is expected to be compatible with Ivy.

2801 export declare class HttpClientModule {