2019.2 - Argument type unknown is not assignable to parameter type string in *ngFor

can't recreate using similar code.

Please provide a full, self-containing code snippet (including the definitions of your component fields and methods)

Sample project would be appreciated

I can confirm that i also have this error which didnt appear before the new update:

I fixed this issue by adding LazyLoadEvent like this ->

@Output() emitLazy = new EventEmitter<LazyLoadEvent>();