lambda-ses-forwarder | AWS SES Email forwarder Lambda function | AWS library

I'm trying to set up an email to go to my custom domain name, which I will call "mydomainname". Currently I can send emails to "contact@mydomainname.com" and receive no error from sending the email, but the received email does not show up in my bucket or spam folder.

I've been following instructions on this github and this tutorial .

I don't understand what the github instructions mean for the instruction that states

"Modify the values in the config object at the top of index.js to specify the S3 bucket and object prefix for locating emails stored by SES. Also provide the email forwarding mapping from original destinations to new destination."

I've tried to guess at what that means by changing the index.js file to the as shown here

I suspect there is an error in the code above,

As well, I receive the following error for the JSON in my lambda-basic-execution

And the error that I receive

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I've included the following screenshots for reference

This is my recipient rule

This shows some information on the settings of my lambda page