NG0303: Can't bind to 'child_variable' since it isn't a known property of 'child-component'.
NG0303: Can't bind to 'labels_value' since it isn't a known property of 'app-line-chart'. Any idea how this error occured? Origin: <td><app-line-chart [labels_value]="lineChartdata" >loading</app-line-chart></td> Here we have a variable "labels_value" that is missing in the component of selector "app-line-chart". Solution: Need to add in child component, LineChartComponent in this case, declaring the selector "app-line-chart" @Input() labels_value: any; Solution done!