Unlocked LND wallet, but still same issue.
I have since realised the issue seems to be RPC connectivity to bitcoin core.
No luck finding the bitcoin.conf file so unable to change or correct it there.
Decided to start deleting and start again. Got all the way down to bitcoin only, and my local Sparrow instance still won’t connect.
Pondering deleting bitcoin core as well, but really hoping to not need to resync entire chain.
Will update more when known.