Bug - Cannot Reproduce Server crash

Hi, Hope I'm doing this right?? There has been a major crash, log below.

Thanks
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KoLmafia v20.4 r20144, Windows 10, Java 13
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specific information about what you were doing when you made this
and include this log as an attachment.
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Timestamp: Thu Jun 04 16:55:07 AWST 2020
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Unexpected error, debug log printed.
class java.lang.StringIndexOutOfBoundsException: String index out of range: -21
java.lang.StringIndexOutOfBoundsException: String index out of range: -21
at java.base/java.lang.String.substring(String.java:1876)
at net.sourceforge.kolmafia.session.StoreManager.update(StoreManager.java:302)
at net.sourceforge.kolmafia.request.ManageStoreRequest.managePrices(ManageStoreRequest.java:243)
at net.sourceforge.kolmafia.request.ManageStoreRequest.run(ManageStoreRequest.java:199)
at net.sourceforge.kolmafia.RequestThread.postRequest(RequestThread.java:300)
at net.sourceforge.kolmafia.RequestThread.postRequest(RequestThread.java:250)
at net.sourceforge.kolmafia.swingui.StoreManageFrame$StoreManagePanel.actionCancelled(StoreManageFrame.java:327)
at net.sourceforge.kolmafia.swingui.panel.GenericPanel$CancelledListener.execute(GenericPanel.java:639)
at net.sourceforge.kolmafia.swingui.listener.ThreadedListener.run(ThreadedListener.java:239)
at net.sourceforge.kolmafia.RequestThread$SequencedRunnable.run(RequestThread.java:432)
at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
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:830)

It seems to have been resolved. Not sure who to thank, so cheers to all

I can see how substring could be given an index of 21, but not -21. If you don't have anything in inventory, it says "Your store has no inventory." rather than having a table of items. It shouldn't bother trying to skip past the header in that case, but it doesn't break, in my testing.
Revision 20170 makes it not bother, if it can't find the header.
I can't claim this fixes your issue, since neither you nor I could reproduce it.
So, I'm closing this.