java.lang.NullPointerException: element cannot be mapped to a null key 2016-04-01 13:09:09.751755500 at java.util.Objects.requireNonNull(Objects.java:228) 2016-04-01 13:09:09.751756500 at java.util.stream.Collectors.lambda$groupingBy$176(Collectors.java:907) 2016-04-01 13:09:09.751756500 at java.util.stream.ReduceOps$3ReducingSink.accept(ReduceOps.java:169)

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via Atlassian JIRA by Xavier Sanchez [Atlassian], 1 year ago
element cannot be mapped to a null key 2016-04-01 13:09:09.751755500 at java.util.Objects.requireNonNull(Objects.java:228) 2016-04-01 13:09:09.751756500 at java.util.stream.Collectors.lambda$groupingBy$176(Collectors.java:907) 2016-04-01 13:09:09.751756500 at java.util.stream.ReduceOps$3ReducingSink.accept(ReduceOps.java:169)
via Atlassian JIRA by Xavier Sanchez [Atlassian], 1 year ago
element cannot be mapped to a null key 2016-04-01 13:09:09.751755500 at java.util.Objects.requireNonNull(Objects.java:228) 2016-04-01 13:09:09.751756500 at java.util.stream.Collectors.lambda$groupingBy$176(Collectors.java:907) 2016-04-01 13:09:09.751756500 at java.util.stream.ReduceOps$3ReducingSink.accept(ReduceOps.java:169)
java.lang.NullPointerException: element cannot be mapped to a null key 2016-04-01 13:09:09.751755500 at java.util.Objects.requireNonNull(Objects.java:228) 2016-04-01 13:09:09.751756500 at java.util.stream.Collectors.lambda$groupingBy$176(Collectors.java:907) 2016-04-01 13:09:09.751756500 at java.util.stream.ReduceOps$3ReducingSink.accept(ReduceOps.java:169)
at java.util.ArrayList.forEach(ArrayList.java:1249)
at java.util.stream.SortedOps$RefSortingSink.end(SortedOps.java:390)

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