Unable to email OpenSearch dashboard

Versions:

AWS Amazon OpenSearch Service - OpenSearch 2.17

Issue:

Trying to execute following from my Mac terminal:

opensearch-reporting-cli \
-u  https://opensearch.mydomain.com/_dashboards/app/dashboards?security_tenant=global#/view/390a9ea0-15d5-11f0-af5f-5f69415fed48 \
-a saml \
-c userid:password \
-f pdf \
--smtphost myrelay.myco.com \
-e smtp -s myemailid@myco.com -r myemailid@myco.com \
-t global 

However, I get following error:

 Downloading report failed. Error: No element found for selector: [name="identifier"]

Not sure what am I missing. Any clues? Also is there a way to print verbose logs for opensearch-reporting-cli utility?