Can I get some help configuring BTC RPC Explorer to work with my node?

I have a full node running on my Mac using these settings (explained below):

datadir=/Volumes/Media HD/Storage/Bitcoin blocksonly=1 server=1 txindex=1 listen=0 rpcport=8332 rpcallowip=127.0.0.1 rpcuser=_btc_rpc_username_ rpcpassword=_btc_rpc_password_ 

I have BTC RPC Explorer installed on the same Mac, but I can't figure out how to get it to see my node.

These are my .env settings:

BTCEXP_BITCOIND_HOST=_my_Mac's_IP_address_ BTCEXP_BITCOIND_PORT=8332 BTCEXP_BITCOIND_USER=_btc_rpc_username_ BTCEXP_BITCOIND_PASS=_btc_rpc_password_ BTCEXP_PORT=3002 BTCEXP_HOST=127.0.0.1 

And here are the errors I'm getting when I tru to run BTC RPC Explorer:

btcexp:error Error RpcError-002: Error: RpcError: type=errorResponse-03, json: {"userData":{"request":{"method":"estimatesmartfee","parameters":[144,"CONSERVATIVE"]}}}, userData: [object Object] (json: {"request":"estimatesmartfee([144,\"CONSERVATIVE\"])"}) +0ms btcexp:errorVerbose Stack: Error: RpcError: type=errorResponse-03 btcexp:errorVerbose at Object.rpcCall (/opt/homebrew/lib/node_modules/btc-rpc-explorer/app/api/rpcApi.js:519:13) btcexp:errorVerbose at process.processTicksAndRejections (node:internal/process/task_queues:95:5) +0ms Error: RpcError: type=errorResponse-03 at Object.rpcCall (/opt/homebrew/lib/node_modules/btc-rpc-explorer/app/api/rpcApi.js:519:13) at process.processTicksAndRejections (node:internal/process/task_queues:95:5) 

Help?! I'm stuck.

The point of my node is purely for me to learn, and I'm using it as a watch-only wallet for my hodl. My internet has a monthly cap, which is my I set my node to blocks only and listen=0.

My Mac is a beast that's running 24/7, so using it as a node hasn't impacted the other stuff I do at all, and I have plenty of hard drive space on the external drive my node is using. So, that's all good.

I'm just stuck trying to configure BTC RPC Explorer. I fully admit, I'm in over my head, so please be kind.