AWS SES API returns error mautic 3.1

Your software
My Mautic version is: 3.1
My PHP version is:

Your problem
My problem is: I have tried sending test email using AWS SES api in mautic, but receives error as: Token amount (2) is larger than the capacity (1). AWS SES smtp is working fine.

These errors are showing in the log: [2020-08-29 10:05:03] mautic.ERROR: [MAIL ERROR] Token amount (2) is larger than the capacity (1). (send); dilshadh.clt@gmail.com {“exception”:"[object] (Swift_TransportException(code: 0): Token amount (2) is larger than the capacity (1). at /var/www/html/mautic/app/bundles/EmailBundle/Swiftmailer/Transport/AbstractTokenArrayTransport.php:300)"}

Steps I have tried to fix the problem: Not able to fix issue. Please help me to fix this.

This being worked on currently likely ready in next patch.

Mohammed Abu Musa

Gave me an update here.