When I am trying to load this pdf http://merlin_test.s3.amazonaws.com/myPdf.pdf, it's unable to render all the contents. There is a blue background which is not visible and some of the texts are not visible as well as the color is not proper. Can someone please help

const groupCtx = this.current.resumeSMaskCtx;
    const currentCtx = this.ctx;
    this.ctx = groupCtx;
    this.groupStack.push(currentCtx);
    this.groupLevel++;
  }
  endSMaskGroup() {