Update to the last version of Angular
Current version used is 10.1.13. the last one is 13.1.0.
Breaking changes in version 11, 12 and 13 are listed in https://github.com/angular/angular/blob/master/CHANGELOG.md
The issue #369 (closed) about the use of the new Angular compiler "Ivy" is directly related.
Edited by David Dorchies