No, you don't need any channels to run Alby Hub. Ah, so you had it working before on the same Umbrel? Did anything change in between?
I highly suspect that those certificate files aren't there, let's try to get the Umbrel Lightning app running first, that should then populate those files.
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Appreciate the help! I do see those files in the paths you mentioned. Should I be looking for anything specific within them?
I should also mention, that when I first started troubleshooting I deleted tls.cert and tls.key in the /LND directory as I had read on the Umbrel site that was a fix for the Lightning app being stuck loading. After removing them the Lightning seems to launch fine, and I do see the cert and key files were recreated.
Last note, I’ve never actually used the Lightning app on my node other than to look around in it (never had any channels or sent anything)