Hello and welcome to Apple Support Communities Bencoleman7,
We see that you're getting an error message when trying to transfer your data from your old Mac to your new Mac. We know how important it is to have your data on your new Mac, and we'd be happy to help.
Take a look at the article below to help with using Migration Assistant. If you go through this article and the issue remains, you might want to consider manually connecting the devices with a cable to transfer the data.
How to move your content to a new Mac
Hope this help. Reach back out if you have additional questions.
Thank you for using Apple Support Communities.