An error occurred when I used BSDF for three-phase simulation

When I use a BSDF with geometric information for three-phase simulation, the following error occurs:

But when I use BSDF without geometry information, everything works fine.
I cant Upload my files

  1. Spend more time on the forum and then you will be able to do so.
  2. You can share a link to the file if you are not able to upload it directly.

PS: Welcome to the forum! :slight_smile: