Render problem with Octane in Rhino8

I’m using Rhino 8 SR6 8.6.24101 and I’m using Octane Render 2023.1.0.137. Previously, I was using Rhino 7 and this issue wasn’t present. The problem is that when I insert a texture into the Rhino preview, it looks fine, but when I launch Octane, the result is as you can see in the attached video. I’m also attaching the file for verification purposes.
R7.3dm (2.3 MB)
R8.3dm (4.0 MB)
montecarlo 1956|666x500 (6.5 MB)