# Malformed escape pair at index 54

**URL:** <https://discuss.elastic.co/t/malformed-escape-pair-at-index-54/318312>\
**Category:** Logstash\
**Tags:** painless\
**Created:** [November 7, 2022, 10:06am UTC](https://discuss.elastic.co/t/malformed-escape-pair-at-index-54/318312 "2022-11-07T10:06:16Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![reed](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/reed/32/122863_2.png) [@reed](https://discuss.elastic.co/u/reed)\
**Post date:** [November 7, 2022, 10:06am UTC](https://discuss.elastic.co/t/malformed-escape-pair-at-index-54/318312/1 "2022-11-07T10:06:16Z")

</div>

Hi all,

i have my http output plugin called so:

```auto
	http { url => "http://10.98.144.73:9200/loyd-strategyone-processcode-%{process-code}/_update_by_query?conflicts=proceed"
			headers => { "Authorization" => "Basic ZWxhc3RpYzpkanNKSHZjUzJQVVQ5" }
			http_method => "post"
			format => "message"
			content_type	=> "application/json"
			message => '{
                                      "script":{
                                         "source":"ctx._source.flg_old_data = params.flg_old_data",
                                         "lang":"painless",
                                         "params":{
                                            "flg_old_data":"Y"
                                         }
                                      },
                                      "query": {
                                        "bool": {
                                          "must": [
                                            { "match": { "h.req-id": "%{[h][req-id]}" } },
                                            { "match": { "h.process-code": "%{[h][process-code]}" } },
                                            { "range": { "h.req-timestamp": { "lt": %{[h][req-timestamp]} } } },
                                            { "match": { "fields.s1env": "%{[fields][s1env]}" } }
                                          ],
                                          "must_not": [
                                            { "match": { "flg_old_data": "Y" } }
                                          ]
                                        }
                                      }
                                   }'
		}

```

but I receive this error:

`[ERROR] 2022-11-07 09:20:17.196 [[loyd-strategyone-step2_tag_oldest]>worker0] http - [HTTP Output Failure] Could not fetch URL {:url=>"[http://10.98.144.73:9200/loyd-strategyone-processcode-%{process-code}/_update_by_query?conflicts=proceed](http://10.98.144.73:9200/loyd-strategyone-processcode-%25%7bprocess-code%7d/_update_by_query?conflicts=proceed)", :method=>:post, :message=>"Malformed escape pair at index 54: [http://10.98.144.73:9200/loyd-strategyone-processcode-%{process-code}/_update_by_query?conflicts=proceed](http://10.98.144.73:9200/loyd-strategyone-processcode-%25%7bprocess-code%7d/_update_by_query?conflicts=proceed)", :class=>"Java::JavaNet::URISyntaxException", :will_retry=>false}`

And I don't understand why, the parentheses are good and fields and syntax even I think.

Any Idea?

thanks in advance.

d.

---

<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:** [December 5, 2022, 10:06am UTC](https://discuss.elastic.co/t/malformed-escape-pair-at-index-54/318312/2 "2022-12-05T10:06:53Z")

</div>

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