Fixed issue by deleting all packages and policies in fleet(they were tested some time in 2020 and 2021.
Referenced this post
This api documentation
And this API calls.
Blockquote
curl -k -X POST -u USER:PASSWORD https://localhost:5601/api/fleet/package_policies/delete -H 'kbn-xsrf: xyz' -H 'Content-Type: application/json' -d '
{
"packagePolicyIds": [
"policy-ID"
],
"force": true
}
'
Blockquote
curl -k -X DELETE -u USER:PASSWORD https://localhost:5601/api/fleet/epm/packages/"package-name"/"package-version" -H 'kbn-xsrf: xyz'