TagHistoryDatasourceSink Error initializing data sink

What should I be looking at to solve this?
Database is connected. I can read and write to tables. There is no history records been added. They are all getting stuck in the store and forward engine.

11:11:15 AM 	TagHistoryDatasourceSink 	Error initializing data sink.

java.lang.ArrayIndexOutOfBoundsException: 255
at com.inductiveautomation.ignition.common.sqltags.history.InterpolationMode.getTypeForValue(InterpolationMode.java:42)
at com.inductiveautomation.ignition.gateway.sqltags.history.storage.TagHistoryDatasourceSink.loadTagIdCache(TagHistoryDatasourceSink.java:457)
at com.inductiveautomation.ignition.gateway.sqltags.history.storage.TagHistoryDatasourceSink.initialize(TagHistoryDatasourceSink.java:190)
at com.inductiveautomation.ignition.gateway.history.sinks.AbstractSink.tryToInit(AbstractSink.java:112)
at com.inductiveautomation.ignition.gateway.sqltags.history.storage.TagHistoryDatasourceSink.tryToInit(TagHistoryDatasourceSink.java:180)
at com.inductiveautomation.ignition.gateway.history.sinks.AbstractSink.isAccepting(AbstractSink.java:129)
at com.inductiveautomation.ignition.gateway.history.sinks.AbstractDatasourceSink.isAccepting(AbstractDatasourceSink.java:81)
at com.inductiveautomation.ignition.gateway.sqltags.history.storage.TagHistoryDatasourceSink.isAccepting(TagHistoryDatasourceSink.java:247)
at com.inductiveautomation.ignition.gateway.history.sinks.AggregateSink.isAccepting(AggregateSink.java:88)
at com.inductiveautomation.ignition.gateway.history.forwarders.ForwarderThread.run(ForwarderThread.java:118)

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Just so the Forum knows.
I solved this with Bobby’s help. As I expected I had done something that I shouldn’t have. I just couldn’t figure out what it was.

(Tip: don’t mess with the query mode)