1. trying to trigger jenkins build from jira.
2. I have Jenkins setup on version 2.251 and 2.231 with jira-trigger-plugin with version 1.0.0. getting same error on both.
3. Jenkins is configured behind an nginx proxy. webhook calls are reaching to jenkins but faillng with error.
4. Jira is on cloud

let me know if any other detail is required.

Error while serving https://JenkinsURL/jira-trigger-webhook-receiver/
org.codehaus.jettison.json.JSONException: JSONObject["name"] not found.
at org.codehaus.jettison.json.JSONObject.get(JSONObject.java:360)
at org.codehaus.jettison.json.JSONObject.getString(JSONObject.java:487)
at com.atlassian.jira.rest.client.internal.json.JsonParseUtil.parseBasicUser(JsonParseUtil.java:192)
at com.atlassian.jira.rest.client.internal.json.UserJsonParser.parse(UserJsonParser.java:34)
at com.atlassian.jira.rest.client.internal.json.UserJsonParser.parse(UserJsonParser.java:31)
at com.atlassian.jira.rest.client.internal.json.IssueJsonParser.getOptionalNestedField(IssueJsonParser.java:300)
at com.atlassian.jira.rest.client.internal.json.IssueJsonParser.parse(IssueJsonParser.java:234)
at com.atlassian.jira.rest.client.internal.json.IssueJsonParser$parse.call(Unknown Source)
at com.ceilfors.jenkins.plugins.jiratrigger.webhook.WebhookCommentEventJsonParser.parse(WebhookCommentEventJsonParser.groovy:39)
at com.ceilfors.jenkins.plugins.jiratrigger.webhook.WebhookCommentEventJsonParser$parse.call(Unknown Source)
at com.ceilfors.jenkins.plugins.jiratrigger.webhook.JiraWebhook.processEvent(JiraWebhook.groovy:71)
at com.ceilfors.jenkins.plugins.jiratrigger.webhook.JiraWebhook$processEvent.callCurrent(Unknown Source)
at com.ceilfors.jenkins.plugins.jiratrigger.webhook.JiraWebhook.doIndex(JiraWebhook.groovy:51)
at java.lang.invoke.MethodHandle.invokeWithArguments(MethodHandle.java:627)
at org.kohsuke.stapler.Function$MethodFunction.invoke(Function.java:396)
Caused: java.lang.reflect.InvocationTargetException
at org.kohsuke.stapler.Function$MethodFunction.invoke(Function.java:400)
at org.kohsuke.stapler.Function$InstanceFunction.in