Can't bind to 'subMenu' since it isn't a known property of 'ng-template'.

[raghav331]

Describe the bug
The sub menu is failing when I do an production configuration bulid.
"Compiling with Angular in legacy View Engine compilation mode.
An unhandled exception occurred: Template parse errors:
Can't bind to 'subMenu' since it isn't a known property of 'ng-template'.

1. If 'subMenu' is an Angular directive, then add 'CommonModule' to the '@NgModule.imports' of
   this component.
2. To allow any property add 'NO_ERRORS_SCHEMA' to the '@NgModule.schemas' of this component. ("
   Multiply function
   
   <ng-template *ngIf="this.treetype!='input'" [ERROR ->][subMenu]="convertSubMenu">
   Convert
   "

To Reproduce
Steps to reproduce the behavior:

1. I have a component that uses the context menu(as an npm package)
2. I have referred the context menu component in another project
3. normal builds are working fine
4. When i try to do and ng build --configuration production , I get this error