Upgrading from 1.27.0 to 1.30.1 - issues

Hey there, I’ve been trying to retire my pool, unsuccessfully, as I had to upgrade to 1.30.1 first. I followed the CoinCashew docs How to update a Stakepool - CoinCashew and when I ran the startBlockProducingNode.sh it gave me an error:

AesonException "Error in $: key \"AlonzoGenesisFile\" not found"

I then found out I don’t have the alonzo-genesis.json config file so I’ve created it and added a key to the main config about it (took all the info from here Cardano Configurations)
(My hash was not matching so without seeing any other solution in sight I’ve swapped it manually to what it was expecting). But now I’m facing yet another problem:

DbLocked "/home/alascardano/cardano-my-node/db/lock"

cardano-node: The db is used by another process. File "/home/alascardano/cardano-my-node/db/lock" is locked

I’m not sure where it all went wrong and would really appreciate any help you can give. The only thing I want by now is to retire the pool, error-free.