PDF with period in title has issues

The filename of the actual pdf is not the one I gave. The url for the pdf is just a backend route that fetches the pdf. Perhaps the problem is when I set the 'displayName'. In the code below, meta.displayName = 'Impella Update: AIC v8.5 Software Update EU-EN'

    const previewFilePromise = this.adobeDCView.previewFile({
      /* Pass information on how to access the file */
      content: {
        /* Location of file where it is hosted */
        location: {
          url,
        },
      },
      /* Pass meta data of file */
      metaData: {
        fileName,
      },
    }, { dockPageControls: false, showAnnotationTools: false, ...viewerConfig });