SES permission denied error when sending emails

What was the resolution to this? I’m encountering the same exact issue with the error message:
User arn:aws:sts::...:assumed-role/aws-lambda-execute/...' is not authorized to perform ses:SendEmail’ on resource `arn:aws:ses:us-east-2:…:identity/…’

I’m using a NextJS application to send an email via SES.