NG2 pdf-viewer src incomplete

Question

In the ts file the pdfSrc like blob:http://localhost:4200/5dbf7415-f051-429a-8fd7-10e8a56455f3

const byteArray = new Uint8Array(
    atob(base64)
        .split("")
        .map(char => char.charCodeAt(0))
);
const file = new Blob([byteArray], { type: "application/pdf" });
this.pdfSrc = URL.createObjectURL(file);

When I check elements the pdfSrc is incomplete like blob:http://localhost:4200/5db

<pdf-viewer [src]="pdfsrc" (error)="onError($event)" [render-text]="true" style="display: block;"></pdf-viewer>

How to get complete pdfSrc?