Hi jake.streett,
As mentioned by linuxdev, this looks like a local issue with APT repository at your machine.
You can try removing the repository that causes you issues with the following approach –
List the current repositories, apt policy
Find the name of the repository and remove it, should be something like -
sudo add-apt-repository --remove ppa:jderose/couchdb.
To be clear neither SDK Manager or JetPack are using it, but it blocking using other APT commands.