I had a quick look at this, houdini 19.0.455 py3 with V-Ray 5.20.02 and Deadline 10.1.22.5
I created a spinning torus, added v-ray car paint, dome light and camera settings
Then dropped down a vray node and connected to both the (Vray) vrayDeadline node and a (Deadline) deadline1 node
The vrayDeadline and deadline1 nodes were both set to export locally and render the vrscene file, which they did no problem.
do you have backticks in the vray ROP which reference other things? seem to remember this causing issues elsewhere. Are you using the Fetch rop or do you have the output stuff in /obj or are you running this in Solaris?
I tried running both with the export via Deadline and they both failed, looks like a py version issue. Vray is being called by a packages json
2022-07-18 16:24:05: 0: INFO: Executable: "C:\Program Files\Side Effects Software\Houdini 19.0.455\bin\Hython.exe"
2022-07-18 16:24:05: 0: INFO: Argument: "C:\ProgramData\Thinkbox\Deadline10\workers\WS01\plugins\1234\hrender_dl.py" -f 5 5 1 -d /out/vray -tempdir "C:\ProgramData\Thinkbox\Deadline10\workers\WS01\jobsData\62d57acf71aa8fb094874788\0_temp3dpGr0" -arnoldAbortOnLicenseFail 1 "C:/Users/antg/vray_test/h19.0.455_vray_test.hipnc"
2022-07-18 16:24:05: 0: INFO: Full Command: "C:\Program Files\Side Effects Software\Houdini 19.0.455\bin\Hython.exe" "C:\ProgramData\Thinkbox\Deadline10\workers\WS01\plugins\123\hrender_dl.py" -f 5 5 1 -d /out/vray -tempdir "C:\ProgramData\Thinkbox\Deadline10\workers\ET-WS03\jobsData\1234\0_temp1234" -arnoldAbortOnLicenseFail 1 "C:/Users/antg/vray_test/h19.0.455_vray_test.hipnc"
2022-07-18 16:24:05: 0: INFO: Startup Directory: "C:\Program Files\Side Effects Software\Houdini 19.0.455\bin"
...
2022-07-18 16:24:06: 0: STDOUT: [2022/Jul/18|16:24:06] VFH | Error| * Python evaluation error: "No module named 'vray'"