angular - ERROR TypeError: Cannot read property 'querySelectorAll' of null and ERROR TypeError: Cannot read property 'getElementsByTagName' of null

Question

*<div class="col-md-12" *ngIf="data_client2.length>0"> <button class="btn print" printSectionId="listVotantesPrint" ngxPrint i18n="@@downloadList"></button> '

<button class="btn csv ml-3" (click)="export('CSV', 'listVotantesPrint')"></button> 
 
<button class="btn excel ml-3" (click)="export('xls', 'listVotantesPrint')"></button> </div>

------------------------------------------------------------------------* component.ts

 public export(type, element) {
    // console.log(element);
    this.exportAsConfig = {
      type: type, // the type you want to download
      elementIdOrContent: element, // the id of html/table element
    };
 

i am try to printing in csv and xml by button click but its giving me above error, i don't why its telling me like this.can any one help me with this

i am using angular 9 "ngx-export-as": "^1.5.0",

question from:https://stackoverflow.com/questions/65942407/error-typeerror-cannot-read-property-queryselectorall-of-null-and-error-typee

Answer 1

Waitting for answers