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Using second sample. Enable virtual scroll width ng-template.

core.js:6228 ERROR TypeError: Cannot read property '0' of undefined
    at Virtualization.uiIndicesInitialization (ej2-lists.es2015.js:2879)
    at Virtualization.uiVirtualization (ej2-lists.es2015.js:2838)
    at ListViewComponent.renderList (ej2-lists.es2015.js:2064)
    at ListViewComponent.setLocalData (ej2-lists.es2015.js:1927)
    at ListViewComponent.render (ej2-lists.es2015.js:2098)
    at ListViewComponent.appendTo (ej2-base.es2015.js:6617)
    at component-base.js:135
    at ZoneDelegate.invokeTask (zone-evergreen.js:399)
    at Object.onInvokeTask (core.js:41632)
    at ZoneDelegate.invokeTask (zone-evergreen.js:398)

@angular/core: 9.1.1