Describe the bug

With the new version 1.11.0 and the introduction of inline attachments for the azure communication extension,
a bug raises with a len of None object error when not setting the inline attachments.

Thanks.

Related command

az communication email send

Errors

object of type 'NoneType' has no len()

Issue script & Debug output

az communication email send \
        --connection-string "${AZURE_COMMUNICATION_SERVICE_ENDPOINT}" \
        --sender "DoNotReply@${AZURE_FROM_SENDER_DOMAIN}" \
        --to "${to_email}" \
        --subject "TEST" \
        --text "See the attachment." \
        --attachments ${filename} \
        --attachment-types plain/text

Expected behavior

Should work.

Environment Summary

azure-cli 2.64
azure communication extension 1.11.0

Additional context

Using azure communication extension 1.10.0 everything work as expected..