Costs error

[aboccali]

Hello,
I am modifying the Alzheimer state machine by adding some new observations and medications. However, when I run Synthea including my custom module, I get the following error:

java.lang.IndexOutOfBoundsException: Index 0 out of bounds for length 0
at java.base/jdk.internal.util.Preconditions.outOfBounds(Preconditions.java:64)
at java.base/jdk.internal.util.Preconditions.outOfBoundsCheckIndex(Preconditions.java:70)
at java.base/jdk.internal.util.Preconditions.checkIndex(Preconditions.java:248)
at java.base/java.util.Objects.checkIndex(Objects.java:374)
at java.base/java.util.ArrayList.get(ArrayList.java:459)
at org.mitre.synthea.world.concepts.Costs.determineCostOfEntry(Costs.java:149)
at org.mitre.synthea.world.concepts.HealthRecord$Entry.determineCost(HealthRecord.java:185)
at org.mitre.synthea.world.concepts.HealthRecord.encounterEnd(HealthRecord.java:1282)
at org.mitre.synthea.engine.State$EncounterEnd.process(State.java:1069)
at org.mitre.synthea.engine.State.run(State.java:193)
at org.mitre.synthea.engine.Module.process(Module.java:430)
at org.mitre.synthea.engine.Module.process(Module.java:446)
at org.mitre.synthea.engine.Module.process(Module.java:383)
at org.mitre.synthea.engine.Generator.updatePerson(Generator.java:703)
at org.mitre.synthea.engine.Generator.createPerson(Generator.java:659)
at org.mitre.synthea.engine.Generator.generatePerson(Generator.java:469)
at org.mitre.synthea.engine.Generator.lambda$run$3(Generator.java:378)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.lang.Thread.run(Thread.java:829)

I initially thought the issue was caused by Synthea requiring cost information for medications, so I added the corresponding entries to /src/main/resources/costs/medications.csv. However, the error still persists.
How should I proceed to correctly resolve this issue?

Thank you in advance.

Alberto

[hadleynet]

There's no ArrayList lookup at Costs.java:149 so you may be using an older release. I'd guess this is caused by the code lookup on line 154 - check that you are assigning a code to each new medication and observation in your updated module.