I've issue exporting my 3Ds Max model to Cesium using the 3ds max cesium plugin

I’m trying to upload the 3ds max model to cesium. I’ve tried to methods:

  1. Cesium plugin in 3dsMax:
    And this fails in the uploading process and gives me logs like:
    (Error encountered on server. Message:‘The operation was canceled.’ when writing an object - Error encountered on server. Message:‘The XML you provided was not well-formed or did not validate against our published schema’ when writing an object)

  2. Exported the model as FBX and it opens very well in Blender, but when uploading it Cesium it generates the error in the screenshot:
    Something went wrong with this asset. To report this issue, please email support@cesium.com with the asset ID: 3001742.

To help resolve this faster, include any relevant information about your data, such as what software you used to export it.

Apologies for the upload issues.

Another person recently reported this same error. We’re currently looking into it.

Thanks.

-Cory