Maya: Warns about illegal characters in output path

Hi, this warning started showing up just recently (if I’m not mistaken), not sure what’s changed. Is there anything I can do about it? The jobs renders fine, but I can’t double-click the tasks to open the output, something that works with Nuke for instance, and is quite convenient. Here’s the submit message:

Deadline Command 10.0 [v10.0.23.4 Release (e0d42871d)]
Submitting to Repository: \\<server>\<folders>\DeadLineRepo
Submission Contains No Auxiliary Files.
Result=Success
JobID=5ccc00efab0dc14d4c0f4755
The job was submitted successfully, but there were some warnings:
- Ignoring output filename &quot;//<server>/<folders>/maya/renders/<scene>.v002_masterLayer/masterLayer.&lt;frame&gt;.exr&quot; because: Illegal characters in path.
Using renderer: redshift

The filename prefix in Maya is set to <Scene>_<RenderLayer>/<RenderLayer>, thought maybe that sub-folder could be messing with Deadline’s parsing, but removing it didn’t fix it, using only the <RenderLayer> tag gives the same result, and that’s vanilla Maya stuff, there’s no illegal characters in there as far as I can tell.

Any guess what’s causing it?

Maya 2019, Redshift.