The PhotoShop Duotone image format is not supported in the current release of the PSD Import filter. A workaround is provided in the following solution.

To address this issue, you can change the image mode in Adobe Photoshop from Duotone to Multi-Channel, which is a format supported by the PSD Import filter. To do so, follow these steps:

  1. Open the file in Adobe Photoshop and save it as a copy.

  2. Choose Image > Mode > Multichannel.

  3. Save the file in PSD format and re-import the image.