Error while Assigning issues to component lead in jelly script

[Alok kumar Singh]

I have written a script which checks for the due date and assign it to component lead.

<JiraJelly xmlns:jira="jelly:com.atlassian.jira.jelly.JiraTagLib" xmlns:core="jelly:core">

<jira:RunSearchRequest filterid="10001" var="issues" size-var="issuecount"/>

<core:forEach var="issue" items="${issues}">

${issue.key}

<jira:AssignIssue key="${issue.key}" assignee="default"/>

</core:forEach>

</JiraJelly>

But it says Error for field &quot;assignee&quot; : User &apos;default&apos; does not exist.

</ErrorMessage>

[Alok kumar Singh]

I need to add components for issues and then put assignee="-1"