# NullPointerException with mutate \> copy @timestamp

**URL:** <https://discuss.elastic.co/t/nullpointerexception-with-mutate-copy-timestamp/128528>\
**Category:** Logstash\
**Created:** [April 18, 2018, 11:51am UTC](https://discuss.elastic.co/t/nullpointerexception-with-mutate-copy-timestamp/128528 "2018-04-18T11:51:38Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![cbley](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/cbley/32/33102_2.png) [@cbley](https://discuss.elastic.co/u/cbley)\
**Post date:** [April 18, 2018, 11:51am UTC](https://discuss.elastic.co/t/nullpointerexception-with-mutate-copy-timestamp/128528/1 "2018-04-18T11:51:38Z")

</div>

```
filter {
  mutate {

```

( sorry, did not intend to post yet )

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [May 16, 2018, 11:52am UTC](https://discuss.elastic.co/t/nullpointerexception-with-mutate-copy-timestamp/128528/2 "2018-05-16T11:52:02Z")

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