message: remove uri.authority. fsPath already includes is.
  See
diff: @@ -120,7 +120,7 @@ export class Viewer {
  }
  getPDFViewerContent(uri: vscode.Uri) : string {
  - const url = `http://localhost:${this.extension.server.port}/viewer.html?incode=1&file=${pdfFilePrefix}${uri.authority ? `\\\\${uri.authority}` : ''}${encodePath(uri.fsPath)}`
  + const url = `http://localhost:${this.extension.server.port}/viewer.html?incode=1&file=${pdfFilePrefix}${encodePath(uri.fsPath)}`
  return `
  <!DOCTYPE html><html><head></head>
  <body><iframe id="preview-panel" class="preview-panel" src="${url}" style="position:absolute; border: none; left: 0; top: 0; width: 100%; height: 100%;">
  