Github user dszeto commented on the issue:
https://github.com/apache/incubator-predictionio/issues/275
Hi, please redirect usage questions to
u...@predictionio.incubator.apache.org for more exposure to the rest of the
community. Subscription instructions can be found at
http://predictionio.incubator.apache.org/support/.
@Christophy is right. Despite the stack trace that you are seeing, all
`pio` commands will still complete successfully. The upcoming release will have
this fixed. Thanks for the patience.
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