OL-RELAY-PORTS — No relay port for a provider
OL-RELAY-PORTS · ERR_MODEL_RELAY_ENDPOINT_PORTS
What happened
A provider slot could not get an endpoint port: its port in the endpoint block ([port + 1, port + 32] above the main relay port) is held by another process, or every port in the block is already assigned.
What to do
Free a port just above the model relay port, then run openlatch restart.