One would think so, but there's just no stack trace printed for the 
NullPointerException.


> On 7 May 2021, at 12:24, John Huss <johnth...@gmail.com> wrote:
> 
> The first line of the stack after the Caused By line would tell you the
> line with the problem, wouldn't it? What was that line?
> 
> On Fri, May 7, 2021 at 7:16 AM Hugi Thordarson <h...@karlmenn.is> wrote:
> 
>> Hi all,
>> 
>> occasionally my users encounter errors when committing changes to the DB.
>> The relevant part of the stack trace looks like this:
>> 
>> ---------
>> org.apache.cayenne.CayenneRuntimeException: [v.4.1 Jul 14 2020 10:26:08]
>> Commit Exception
>>        at
>> org.apache.cayenne.access.DataContext.flushToParent(DataContext.java:774)
>>        at
>> org.apache.cayenne.access.DataContext.commitChanges(DataContext.java:691)
>>        [...removed rest of trace…]
>> Caused by: java.lang.NullPointerException
>> ---------
>> 
>> Unfortunately I've been unable to reproduce this error, so before I dive
>> into it I'm wondering if this looks familiar to anyone, if there are
>> obvious places to look or if there are recommendations for strategies to
>> debug?
>> 
>> Cheers,
>> - hugi

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