clCreateContext(): CL_OUT_OF_HOST_MEMORY

[Snoopy]

for short the error means the follwoing

RE: clCreateContext(): CL_OUT_OF_HOST_MEMORY
Device #1: Intel(R) Xeon(R) Gold 6226 CPU @ 2.70GHz, 511/511 MB allocatable, 48MCU

you / hashcat has not enough RAM to go for this attack, server / xeon CPU with just 512 MB RAM seems really strange to me, try to add some more RAM