Angular 10 Module parse failed: Unexpected token - node.js

Question

So, after i upgraded my Angular Application to Angular 10 (from 7) i get the Following Error when serving the Application via ng serve.
ERROR in ./src/app/lizenz-list/lizenz-list.component.html 1:0
Module parse failed: Unexpected token (1:0)
You may need an appropriate loader to handle this file type, currently no loaders are configured to process this file. See https://webpack.js.org/concepts#loaders
The HTML file looks like this
<ng-template #CRUDTemplatePluginTableCaption>
<div class="ui-g-12 ui-md-6">
<button type="button" style="margin-right: 10px" pButton icon="ui-icon-add"
(click)="addCRUDItem()"></button>
<button type="button" pButton icon="far fa-server" (click)="getServerInfo()"></button>
</div>
</ng-template>
The template of lizenz-list.ts looks like this:
template: `${CRUDBasicListComponent_Template || ''}${LizenzListComponent_Template}`
Perhaps this could be the issue?
On Angular 7 everything worked fine, i just cant find the answer to the Problem.
EDIT: I am Using PrimeNg as an UI Library.
CRUDBasicListComponent_Template is an Exported html Template that looks like this:
<p-table [properties etc..]>
<ng-template pTemplate="caption">
<!--Where the ng-Template from Lizenz should be replaced -->
<ng-container *ngTemplateOutlet="CRUDTemplatePluginTableCaption">
</ng-container>
</ng-template>
<ng-template pTemplate="header" let-columns>
<!--HEADER-->
</ng-template>
<ng-template pTemplate="body" let-CRUDItem let-columns="columns">
<!--BODY WITH DATA-->
</ng-template>
</p-table>