<bug>: <​[common.py:236] log(): Failed to convert Mitsuba class "Texture".>

[Start1er]

Bug Description
The Texture class which contains .vol as the texture class scene like the dataset here https://github.com/rgl-epfl/differentiable-sdf-rendering offers can not be loaded correctly in blender

To Reproduce
Steps to reproduce the behavior:

1. Go to a scene xml file where

<scene version="2.1.0">
   <path value="../"/>

   <bsdf type="principled" id="main-bsdf">
   	<texture type="volume" name="base_color">
   		<volume type="gridvolume" name="volume">
   			<string name="filename" value="textures/red.vol"/>
   		</volume>
   	</texture>
   	<texture type="volume" name="roughness">
   		<volume type="gridvolume" name="volume">
   			<string name="filename" value="textures/gray.vol"/>
   		</volume>
   	</texture>
   	<float name="specular" value="1.000000"/>
   </bsdf>
   <default name="main_bsdf_name" value="main-bsdf"/>
</scene>

Expected behavior
I expected the scene which cantains the .vol as principled BRDF texture can be loaded correctly in blender?

Resources

Environment (please complete the following information):

• OS: Windows
• Blender Version: [e.g. 3.6]
• Add-on Version: [e.g. 0.3.0]