I have the same problem, apparently I get that message through Windows 11 VM, even checking Windows, after a while the memory becomes saturated, occupying 100% of the memory and the unraid log fills up.
Jan 24 00:19:55 NAS-NEURO nginx: 2024/01/24 00:19:55 [error] 10248#10248: nchan: Out of shared memory while allocating message of size 41958. Increase nchan_max_reserved_memory.
Jan 24 00:19:55 NAS-NEURO nginx: 2024/01/24 00:19:55 [error] 10248#10248: *1961026 nchan: error publishing message (HTTP status code 500), client: unix:, server: , request: "POST /pub/notify?buffer_length=1 HTTP/1.1", host: "localhost"
Jan 24 00:19:55 NAS-NEURO nginx: 2024/01/24 00:19:55 [error] 10248#10248: MEMSTORE:00: can't create shared message for channel /notify
Jan 24 00:19:58 NAS-NEURO nginx: 2024/01/24 00:19:58 [crit] 10248#10248: ngx_slab_alloc() failed: no memory
Jan 24 00:19:58 NAS-NEURO nginx: 2024/01/24 00:19:58 [error] 10248#10248: shpool alloc failed
Jan 24 00:19:58 NAS-NEURO nginx: 2024/01/24 00:19:58 [error] 10248#10248: nchan: Out of shared memory while allocating message of size 41958. Increase nchan_max_reserved_memory.
Jan 24 00:19:58 NAS-NEURO nginx: 2024/01/24 00:19:58 [error] 10248#10248: *1961059 nchan: error publishing message (HTTP status code 500), client: unix:, server: , request: "POST /pub/notify?buffer_length=1 HTTP/1.1", host: "localhost"
Jan 24 00:19:58 NAS-NEURO nginx: 2024/01/24 00:19:58 [error] 10248#10248: MEMSTORE:00: can't create shared message for channel /notify
Jan 24 00:42:53 NAS-NEURO mcelog: Running trigger `bus-error-trigger' (reporter: bus)
Jan 24 00:42:53 NAS-NEURO kernel: mce: [Hardware Error]: Machine check events logged