# NullPointerException when using script based sorting from Python client **URL:** \ **Category:** Elasticsearch\ **Created:** [February 4, 2015, 11:50pm UTC](https://discuss.elastic.co/t/nullpointerexception-when-using-script-based-sorting-from-python-client/21981 "2015-02-04T23:50:40Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![ElasticSearch\_Users\_](https://avatars.discourse-cdn.com/v4/letter/e/b4bc9f/32.png) [@ElasticSearch\_Users\_](https://discuss.elastic.co/u/ElasticSearch_Users_)\ **Post date:** [February 4, 2015, 11:50pm UTC](https://discuss.elastic.co/t/nullpointerexception-when-using-script-based-sorting-from-python-client/21981/1 "2015-02-04T23:50:40Z")
Hi, I am trying to use the script based sorting in my queries. This works fine when using Marvel Sense to submit the query but with the Elasticsearch python client I am getting a NullPointerException. Here is the simplified query in Sense: GET /igo/task/\_search { "query": { "match\_all": {} }, "sort" : [ {"\_script": { "lang": "groovy", "script": "doc['[shot.org](http://shot.org)']", "type": "string", "order":"asc" }} ] } And here is the Python version: > > > from elasticsearch import Elasticsearch > > > es = Elasticsearch(["argentina", "peru", "elsalvador"]) > > > es.search(index="igo", doc\_type="task", body={"query":{"match\_all":{}}, > > > "sort":{"\_script":{"order":"asc","type":"string","script":"doc['[shot.org](http://shot.org)'].value"}} > > > }) Results in : Traceback (most recent call last): File "", line 1, in File "/rel/lang/python/2.7.3-3/opt-debug-iccMaya2014\_64/lib/python2.7/site-packages/elasticsearch/client/utils.py", line 68, in \_wrapped return func(\*args, params=params, \*\*kwargs) File "/rel/lang/python/2.7.3-3/opt-debug-iccMaya2014\_64/lib/python2.7/site-packages/elasticsearch/client/ **init**.py", line 440, in search params=params, body=body) File "/rel/lang/python/2.7.3-3/opt-debug-iccMaya2014\_64/lib/python2.7/site-packages/elasticsearch/transport.py", line 276, in perform\_request status, headers, data = connection.perform\_request(method, url, params, body, ignore=ignore, timeout=timeout) File "/rel/lang/python/2.7.3-3/opt-debug-iccMaya2014\_64/lib/python2.7/site-packages/elasticsearch/connection/http\_urllib3.py", line 55, in perform\_request self.\_raise\_error(response.status, raw\_data) File "/rel/lang/python/2.7.3-3/opt-debug-iccMaya2014\_64/lib/python2.7/site-packages/elasticsearch/connection/base.py", line 97, in \_raise\_error raise HTTP\_EXCEPTIONS.get(status\_code, TransportError)(status\_code, error\_message, additional\_info) \: TransportError(500, u'SearchPhaseExecutionException[Failed to execute phase [query], all shards failed; shardFailures {[MNLGv6W8Qfu1G1b51Bx\_xA][igo][0]: QueryPhaseExecutionException[[igo][0]: query[ConstantScore(cache(\_type:task))],from[0],size[10],sort[\]: Query Failed [Failed to execute main query]]; nested: NullPointerException; }{[MNLGv6W8Qfu1G1b51Bx\_xA][igo][1]: QueryPhaseExecutionException[[igo][1]: query[ConstantScore(cache(\_type:task))],from[0],size[10],sort[\]: Query Failed [Failed to execute main query]]; nested: NullPointerException; }{[84YFiTW2RuCkGWu\_gILm7g][igo][2]: RemoteTransportException[[Noh-Varr][inet[/10.110.49.5:9300]][indices:data/read/search[phase/query]]]; nested: QueryPhaseExecutionException[[igo][2]: query[ConstantScore(cache(\_type:task))],from[0],size[10],sort[\]: Query Failed [Failed to execute main query]]; nested: NullPointerException; }{[84YFiTW2RuCkGWu\_gILm7g][igo][3]: RemoteTransportException[[Noh-Varr][inet[/10.110.49.5:9300]][indices:data/read/search[phase/query]]]; nested: QueryPhaseExecutionException[[igo][3]: query[ConstantScore(cache(\_type:task))],from[0],size[10],sort[\]: Query Failed [Failed to execute main query]]; nested: NullPointerException; }{[0\_CpAuqRR2aDfbDxa9MXqQ][igo][4]: RemoteTransportException[[Torso][inet[/10.110.49.10:9300]][indices:data/read/search[phase/query]]]; nested: QueryPhaseExecutionException[[igo][4]: query[ConstantScore(cache(\_type:task))],from[0],size[10],sort[\]: Query Failed [Failed to execute main query]]; nested: NullPointerException; }]') Here is the cluster info: curl -XGET 'peru:9200' { "status" : 200, "name" : "Spider Doppelganger", "cluster\_name" : "dhandoff", "version" : { "number" : "1.4.0", "build\_hash" : "bc94bd81298f81c656893ab1ddddd30a99356066", "build\_timestamp" : "2014-11-05T14:26:12Z", "build\_snapshot" : false, "lucene\_version" : "4.10.2" }, "tagline" : "You Know, for Search" } Thanks. -Selim -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/d8c73379-6267-4ec6-a2e9-ee052fd2a5ff%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/d8c73379-6267-4ec6-a2e9-ee052fd2a5ff%40googlegroups.com). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**Author:** ![ElasticSearch\_Users\_](https://avatars.discourse-cdn.com/v4/letter/e/b4bc9f/32.png) [@ElasticSearch\_Users\_](https://discuss.elastic.co/u/ElasticSearch_Users_)\ **Post date:** [February 4, 2015, 11:57pm UTC](https://discuss.elastic.co/t/nullpointerexception-when-using-script-based-sorting-from-python-client/21981/2 "2015-02-04T23:57:00Z")
Actually I fixed my query in Sense, and now I am getting the same error: GET /igo/task/\_search { "query": { "match\_all": {} }, "sort" : [ {"\_script": { "lang": "groovy", "script": "doc['[shot.org](http://shot.org)'].value", "type": "string", "order":"asc" }} ] } Any ideas why? All documents should have the field "[shot.org](http://shot.org)" for this doc type. -Selim On Wednesday, February 4, 2015 at 3:50:40 PM UTC-8, Selim Tuvi wrote: > Hi, I am trying to use the script based sorting in my queries. This works > fine when using Marvel Sense to submit the query but with the Elasticsearch > python client I am getting a NullPointerException. > > Here is the simplified query in Sense: > > GET /igo/task/\_search > { > "query": { > "match\_all": {} > }, > "sort" : [ > {"\_script": { > "lang": "groovy", > "script": "doc['[shot.org](http://shot.org)']", > "type": "string", > "order":"asc" > }} > ] > } > > And here is the Python version: > > > > > from elasticsearch import Elasticsearch > > > > es = Elasticsearch(["argentina", "peru", "elsalvador"]) > > > > es.search(index="igo", doc\_type="task", > > > > body={"query":{"match\_all":{}}, > > > > "sort":{"\_script":{"order":"asc","type":"string","script":"doc['[shot.org](http://shot.org)'].value"}} > > > > }) > > Results in : > > Traceback (most recent call last): > File "", line 1, in > File > "/rel/lang/python/2.7.3-3/opt-debug-iccMaya2014\_64/lib/python2.7/site-packages/elasticsearch/client/utils.py", > line 68, in \_wrapped > return func(\*args, params=params, \*\*kwargs) > File > "/rel/lang/python/2.7.3-3/opt-debug-iccMaya2014\_64/lib/python2.7/site-packages/elasticsearch/client/ **init**.py", > line 440, in search > params=params, body=body) > File > "/rel/lang/python/2.7.3-3/opt-debug-iccMaya2014\_64/lib/python2.7/site-packages/elasticsearch/transport.py", > line 276, in perform\_request > status, headers, data = connection.perform\_request(method, url, > params, body, ignore=ignore, timeout=timeout) > File > "/rel/lang/python/2.7.3-3/opt-debug-iccMaya2014\_64/lib/python2.7/site-packages/elasticsearch/connection/http\_urllib3.py", > line 55, in perform\_request > self.\_raise\_error(response.status, raw\_data) > File > "/rel/lang/python/2.7.3-3/opt-debug-iccMaya2014\_64/lib/python2.7/site-packages/elasticsearch/connection/base.py", > line 97, in \_raise\_error > raise HTTP\_EXCEPTIONS.get(status\_code, TransportError)(status\_code, > error\_message, additional\_info) > \: TransportError(500, > u'SearchPhaseExecutionException[Failed to execute phase [query], all shards > failed; shardFailures {[MNLGv6W8Qfu1G1b51Bx\_xA][igo][0]: > QueryPhaseExecutionException[[igo][0]: > query[ConstantScore(cache(\_type:task))],from[0],size[10],sort[\ org.elasticsearch.search.sort.ScriptSortParser$1@51179aca\>]: Query Failed > [Failed to execute main query]]; nested: NullPointerException; > }{[MNLGv6W8Qfu1G1b51Bx\_xA][igo][1]: QueryPhaseExecutionException[[igo][1]: > query[ConstantScore(cache(\_type:task))],from[0],size[10],sort[\ org.elasticsearch.search.sort.ScriptSortParser$1@60dd6408\>]: Query Failed > [Failed to execute main query]]; nested: NullPointerException; > }{[84YFiTW2RuCkGWu\_gILm7g][igo][2]: > RemoteTransportException[[Noh-Varr][inet[/10.110.49.5:9300]][indices:data/read/search[phase/query]]]; > nested: QueryPhaseExecutionException[[igo][2]: > query[ConstantScore(cache(\_type:task))],from[0],size[10],sort[\ org.elasticsearch.search.sort.ScriptSortParser$1@16e97194\>]: Query Failed > [Failed to execute main query]]; nested: NullPointerException; > }{[84YFiTW2RuCkGWu\_gILm7g][igo][3]: > RemoteTransportException[[Noh-Varr][inet[/10.110.49.5:9300]][indices:data/read/search[phase/query]]]; > nested: QueryPhaseExecutionException[[igo][3]: > query[ConstantScore(cache(\_type:task))],from[0],size[10],sort[\ org.elasticsearch.search.sort.ScriptSortParser$1@6dcca705\>]: Query Failed > [Failed to execute main query]]; nested: NullPointerException; > }{[0\_CpAuqRR2aDfbDxa9MXqQ][igo][4]: > RemoteTransportException[[Torso][inet[/10.110.49.10:9300]][indices:data/read/search[phase/query]]]; > nested: QueryPhaseExecutionException[[igo][4]: > query[ConstantScore(cache(\_type:task))],from[0],size[10],sort[\ org.elasticsearch.search.sort.ScriptSortParser$1@2da08f40\>]: Query Failed > [Failed to execute main query]]; nested: NullPointerException; }]') > > Here is the cluster info: > > curl -XGET 'peru:9200' > { > "status" : 200, > "name" : "Spider Doppelganger", > "cluster\_name" : "dhandoff", > "version" : { > "number" : "1.4.0", > "build\_hash" : "bc94bd81298f81c656893ab1ddddd30a99356066", > "build\_timestamp" : "2014-11-05T14:26:12Z", > "build\_snapshot" : false, > "lucene\_version" : "4.10.2" > }, > "tagline" : "You Know, for Search" > } > > Thanks. > -Selim -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/710f4223-70fe-449b-943f-b9445fa7db80%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/710f4223-70fe-449b-943f-b9445fa7db80%40googlegroups.com). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**Author:** ![ElasticSearch\_Users\_](https://avatars.discourse-cdn.com/v4/letter/e/b4bc9f/32.png) [@ElasticSearch\_Users\_](https://discuss.elastic.co/u/ElasticSearch_Users_)\ **Post date:** [February 5, 2015, 1:23am UTC](https://discuss.elastic.co/t/nullpointerexception-when-using-script-based-sorting-from-python-client/21981/3 "2015-02-05T01:23:27Z")
Actually I am wrong. Looks like some documents did not get created with the [shot.org](http://shot.org) field. I am just surprised that the sort script syntax is more sensitive compared to the sort field syntax. Is there a way to handle this inside the groovy script? I tried checking for null inside the script and not returning anything but that didn't help. Thanks -Selim On Wednesday, February 4, 2015 at 3:57:00 PM UTC-8, Selim Tuvi wrote: > Actually I fixed my query in Sense, and now I am getting the same error: > > GET /igo/task/\_search > { > "query": { > "match\_all": {} > }, > "sort" : [ > {"\_script": { > "lang": "groovy", > "script": "doc['[shot.org](http://shot.org)'].value", > "type": "string", > "order":"asc" > }} > ] > } > > Any ideas why? All documents should have the field "[shot.org](http://shot.org)" for this > doc type. > > -Selim -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/5f5d18dc-f4fc-4895-a037-95ddf6613fab%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/5f5d18dc-f4fc-4895-a037-95ddf6613fab%40googlegroups.com). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**Author:** ![masaru](https://avatars.discourse-cdn.com/v4/letter/m/a9a28c/32.png) [@masaru](https://discuss.elastic.co/u/masaru)\ **Post date:** [February 5, 2015, 2:09am UTC](https://discuss.elastic.co/t/nullpointerexception-when-using-script-based-sorting-from-python-client/21981/4 "2015-02-05T02:09:34Z")
Hi, ## Something like this should work: ## "doc['[shot.org](http://shot.org)'] ? doc[’[shot.org](http://shot.org)'].value : ’default\_value'" Masaru On February 5, 2015 at 10:23:34, 'Selim Tuvi' via elasticsearch ([elasticsearch@googlegroups.com](mailto:elasticsearch@googlegroups.com)) wrote: > Actually I am wrong. Looks like some documents did not get created with the > [shot.org](http://shot.org) field. I am just surprised that the sort script syntax is more > sensitive compared to the sort field syntax. Is there a way to handle this > inside the groovy script? I tried checking for null inside the script and > not returning anything but that didn't help. > > Thanks > -Selim > > On Wednesday, February 4, 2015 at 3:57:00 PM UTC-8, Selim Tuvi wrote: > > > Actually I fixed my query in Sense, and now I am getting the same error: > > > > GET /igo/task/\_search > > { > > "query": { > > "match\_all": {} > > }, > > "sort" : [ > > {"\_script": { > > "lang": "groovy", > > "script": "doc['[shot.org](http://shot.org)'].value", > > "type": "string", > > "order":"asc" > > }} > > ] > > } > > > > Any ideas why? All documents should have the field "[shot.org](http://shot.org)" for this > > doc type. > > > > -Selim > > -- > You received this message because you are subscribed to the Google Groups "elasticsearch" > group. > To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). > To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/5f5d18dc-f4fc-4895-a037-95ddf6613fab%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/5f5d18dc-f4fc-4895-a037-95ddf6613fab%40googlegroups.com). > For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/etPan.54d2d11a.12200854.1c2%40citra.local](https://groups.google.com/d/msgid/elasticsearch/etPan.54d2d11a.12200854.1c2%40citra.local). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\ **Post date:** [February 5, 2015, 5:53am UTC](https://discuss.elastic.co/t/nullpointerexception-when-using-script-based-sorting-from-python-client/21981/5 "2015-02-05T05:53:17Z")
Do you have a full stack trace in server logs? David > Le 5 févr. 2015 à 03:09, Masaru Hasegawa [haniomasali@gmail.com](mailto:haniomasali@gmail.com) a écrit : > > Hi, > > ## Something like this should work: > > ## "doc['[shot.org](http://shot.org)'] ? doc[’[shot.org](http://shot.org)'].value : ’default\_value'" > > Masaru > > > On February 5, 2015 at 10:23:34, 'Selim Tuvi' via elasticsearch ([elasticsearch@googlegroups.com](mailto:elasticsearch@googlegroups.com)) wrote: > > Actually I am wrong. Looks like some documents did not get created with the > > [shot.org](http://shot.org) field. I am just surprised that the sort script syntax is more > > sensitive compared to the sort field syntax. Is there a way to handle this > > inside the groovy script? I tried checking for null inside the script and > > not returning anything but that didn't help. > > > > Thanks > > -Selim > > > > > On Wednesday, February 4, 2015 at 3:57:00 PM UTC-8, Selim Tuvi wrote: > > > > > > Actually I fixed my query in Sense, and now I am getting the same error: > > > > > > GET /igo/task/\_search > > > { > > > "query": { > > > "match\_all": {} > > > }, > > > "sort" : [ > > > {"\_script": { > > > "lang": "groovy", > > > "script": "doc['[shot.org](http://shot.org)'].value", > > > "type": "string", > > > "order":"asc" > > > }} > > > ] > > > } > > > > > > Any ideas why? All documents should have the field "[shot.org](http://shot.org)" for this > > > doc type. > > > > > > -Selim > > > > -- > > You received this message because you are subscribed to the Google Groups "elasticsearch" > > group. > > To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). > > To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/5f5d18dc-f4fc-4895-a037-95ddf6613fab%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/5f5d18dc-f4fc-4895-a037-95ddf6613fab%40googlegroups.com). > > For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). > > -- > You received this message because you are subscribed to the Google Groups "elasticsearch" group. > To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). > To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/etPan.54d2d11a.12200854.1c2%40citra.local](https://groups.google.com/d/msgid/elasticsearch/etPan.54d2d11a.12200854.1c2%40citra.local). > For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/7535A4AB-C403-4EB5-B810-C7B0DFBB5D09%40pilato.fr](https://groups.google.com/d/msgid/elasticsearch/7535A4AB-C403-4EB5-B810-C7B0DFBB5D09%40pilato.fr). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**Author:** ![ElasticSearch\_Users\_](https://avatars.discourse-cdn.com/v4/letter/e/b4bc9f/32.png) [@ElasticSearch\_Users\_](https://discuss.elastic.co/u/ElasticSearch_Users_)\ **Post date:** [February 7, 2015, 12:16am UTC](https://discuss.elastic.co/t/nullpointerexception-when-using-script-based-sorting-from-python-client/21981/6 "2015-02-07T00:16:18Z")
Thanks Masaru, I ended up coding this and that worked: shot = doc['[shot.org](http://shot.org)'].value; if (shot==null) return ''; . . -Selim On Wednesday, February 4, 2015 at 6:10:48 PM UTC-8, Masaru Hasegawa wrote: > Hi, > > ## Something like this should work: > > ## "doc['[shot.org](http://shot.org)'] ? doc[’[shot.org](http://shot.org)'].value : ’default\_value'" > > Masaru > > On February 5, 2015 at 10:23:34, 'Selim Tuvi' via elasticsearch ( > [elasti...@googlegroups.com](mailto:elasti...@googlegroups.com) \) wrote: > > > Actually I am wrong. Looks like some documents did not get created with > > the > > [shot.org](http://shot.org) field. I am just surprised that the sort script syntax is more > > sensitive compared to the sort field syntax. Is there a way to handle > > this > > inside the groovy script? I tried checking for null inside the script > > and > > not returning anything but that didn't help. > > > > Thanks > > -Selim > > > > On Wednesday, February 4, 2015 at 3:57:00 PM UTC-8, Selim Tuvi wrote: > > > > > Actually I fixed my query in Sense, and now I am getting the same > > > error: > > > > > > GET /igo/task/\_search > > > { > > > "query": { > > > "match\_all": {} > > > }, > > > "sort" : [ > > > {"\_script": { > > > "lang": "groovy", > > > "script": "doc['[shot.org](http://shot.org)'].value", > > > "type": "string", > > > "order":"asc" > > > }} > > > ] > > > } > > > > > > Any ideas why? All documents should have the field "[shot.org](http://shot.org)" for > > > this > > > doc type. > > > > > > -Selim > > > > -- > > You received this message because you are subscribed to the Google > > Groups "elasticsearch" > > group. > > To unsubscribe from this group and stop receiving emails from it, send > > an email to [elasticsearc...@googlegroups.com](mailto:elasticsearc...@googlegroups.com) \. > > To view this discussion on the web visit > > [https://groups.google.com/d/msgid/elasticsearch/5f5d18dc-f4fc-4895-a037-95ddf6613fab%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/5f5d18dc-f4fc-4895-a037-95ddf6613fab%40googlegroups.com). > > > For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/605995d9-d3ce-4b34-bdb7-f2932ec4a52c%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/605995d9-d3ce-4b34-bdb7-f2932ec4a52c%40googlegroups.com). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 6, 2017, 12:34am UTC](https://discuss.elastic.co/t/nullpointerexception-when-using-script-based-sorting-from-python-client/21981/7 "2017-07-06T00:34:24Z")