Response code:400 Response message:Bad Request Jmeter api testing with JIRA with POST method

when try to create issue in jira using the Jmeter api with POST method, it does not allow to create issue. And show below error. I uploaded my all configuration image.

can anybody correct me?

Thanks in advance.

2020-12-27 19:48:35,841 ERROR o.a.j.p.h.s.HTTPJavaImpl: readResponse: java.io.IOException: Server returned HTTP response code: 400 for URL: https://learntestapi.atlassian.net/rest/api/2/issue 2020-12-27 19:48:35,841 ERROR o.a.j.p.h.s.HTTPJavaImpl: Cause: java.io.IOException: Server returned HTTP response code: 400 for URL: https://learntestapi.atlassian.net/rest/api/2/issue

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