V ray render square stain

[mate_gada]

Hi
can someone solve this problem with rendering square stain?
problem exist if i use swarn. If i render from my PC i dont have stains.
Stains only shows while i render with swarn.

[Peter.Chaushev]

Hello, mate_gada .
This is most likely due to a reflection texture file that has not been transferred successfully to the machine assisting in the render process.
To amend this, first, open the File Path Editor (Extensions > V-Ray > File Path Editor) to see if there are any missing assets or whether their location is inaccessible to the other machine.
Secondly, look into the V-Ray Swarm log of the affected machine. Simply type http://[IP_ADDRESS]:24267/log (substitute IP_ADDRESS with the actual IP address of the machine). The errors/warnings there will point you to the exact file that is missing.
If you are not able to determine which machine is rendering the faulty buckets, set up a "DR Bucket" render element and run another render. The moment you spot this discrepancy, stop the process and check the DR_Bucket render channel in the VFB. Each bucket will be tagged with the name of the machine that rendered it.

Please let me know if this helps!

Kind regards,
Peter