Ignition[state=STARTING] ContextState = FAULTED

Tried to Restart the Backup server over the weekend, and it faulted. Here is what I think is the relevent portion of the Wrapper log.
Any help would be appreciated.

INFO | jvm 1 | 2020/08/17 05:27:38 | I [AuditManager ] [09:27:38]: AuditManager starting up…
INFO | jvm 1 | 2020/08/17 05:27:39 | E [IgnitionGateway ] [09:27:39]: Error during context startup.
INFO | jvm 1 | 2020/08/17 05:27:39 | java.lang.IllegalArgumentException: value already present: 01-DDC-4.12A
INFO | jvm 1 | 2020/08/17 05:27:39 | at com.google.common.collect.HashBiMap.put(HashBiMap.java:287)
INFO | jvm 1 | 2020/08/17 05:27:39 | at com.google.common.collect.HashBiMap.put(HashBiMap.java:262)
INFO | jvm 1 | 2020/08/17 05:27:39 | at com.inductiveautomation.ignition.gateway.opc.ConnectionMap.addConnection(ConnectionMap.java:53)
INFO | jvm 1 | 2020/08/17 05:27:39 | at com.inductiveautomation.ignition.gateway.opc.OpcConnectionManagerImpl.addAllServers(OpcConnectionManagerImpl.java:139)
INFO | jvm 1 | 2020/08/17 05:27:39 | at com.inductiveautomation.ignition.gateway.opc.OpcConnectionManagerImpl.startup(OpcConnectionManagerImpl.java:83)
INFO | jvm 1 | 2020/08/17 05:27:39 | at com.inductiveautomation.ignition.gateway.IgnitionGateway.startupInternal(IgnitionGateway.java:1068)
INFO | jvm 1 | 2020/08/17 05:27:39 | at com.inductiveautomation.ignition.gateway.redundancy.RedundancyManagerImpl.startup(RedundancyManagerImpl.java:283)
INFO | jvm 1 | 2020/08/17 05:27:39 | at com.inductiveautomation.ignition.gateway.IgnitionGateway.initRedundancy(IgnitionGateway.java:697)
INFO | jvm 1 | 2020/08/17 05:27:39 | at com.inductiveautomation.ignition.gateway.IgnitionGateway.lambda$initInternal$0(IgnitionGateway.java:635)
INFO | jvm 1 | 2020/08/17 05:27:39 | at com.inductiveautomation.ignition.common.execution.impl.BasicExecutionEngine$ThrowableCatchingRunnable.run(BasicExecutionEngine.java:518)
INFO | jvm 1 | 2020/08/17 05:27:39 | at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
INFO | jvm 1 | 2020/08/17 05:27:39 | at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
INFO | jvm 1 | 2020/08/17 05:27:39 | at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown Source)
INFO | jvm 1 | 2020/08/17 05:27:39 | at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
INFO | jvm 1 | 2020/08/17 05:27:39 | at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
INFO | jvm 1 | 2020/08/17 05:27:39 | at java.base/java.lang.Thread.run(Unknown Source)
INFO | jvm 1 | 2020/08/17 05:27:39 | I [IgnitionGateway ] [09:27:39]: Ignition[state=STARTING] ContextState = FAULTED

Running into the same issue upgrading from 8.1.20 to 8.1.23. Do you remember what you did to resolve this?