NguiReactModule is incompatible with Ivy

[Rashmi-SendinBlue]

After upgrading from angular version 8 to 9, I'm getting this error:

node_modules/@ngui/react/dist/react.module.d.ts:3:22 - error NG6002: Appears in the NgModule.imports of AppModule, but could not be resolved to an NgModule class.

This likely means that the library (@ngui/react) which declares NguiReactModule 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 Check if a newer version of the library is available, and update if so.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.