PDF Embed API - File preview not available

I believe I have checked all related posts. Still this error can not be fixed.

Here is my scripts.

  <div id="adobe-dc-view" style="height: 960px; width: 60%;"></div>
    <script src="https://documentcloud.adobe.com/view-sdk/main.js"></script>
      <script type="text/javascript">
        document.addEventListener("adobe_dc_view_sdk.ready", function(){ 
          var adobeDCView = new AdobeDC.View({clientId: "b925ad5e782c410ba78800c9ec21327c", divId: "adobe-dc-view"});
          adobeDCView.previewFile({
            content:{location: {url: "http://anning.se/unsorted/raw.20210905163612.4032092.pdf"}},
            metaData:{fileName: "raw.20210905163612.4032092.pdf"}
          }, {embedMode: "SIZED_CONTAINER"});
        });
      </script>

Credential has been recreated multiple times.

The PDF file is reachable.

http://anning.se/unsorted/raw.20210905163612.4032092.pdf

I also tried https, direct, or indirect url.

Any more suggestions? Thanks a lot.