I figured it out. The Lightning Node uses a different kind of wallet called an Aezeed Wallet and those keys are not compatible with Sparrow Wallet for recovering your funds. Blue Wallet works for this.
I'm trying to create a lightning node on my Umbrel. When it gives my keys, I test them in Sparrow Wallet to be sure I can recover the wallet later on if needed and it says invalid checksum every time. #asknostr