privacy – HOW TO RUN SCRIPT ON bitcoin.conf
Your link says
Dependencies: bash, bitcoin-cli (v0.15 or newer), awk, bc, jq, sed.
which means it runs on Linux (possibly also under WSL bash shell)
you tagged your question wasabi and samouri – but those products probably don’t support the necessary interface or platform, so I am unsure why you used those tags. You must be running a
bitcoin-cli executable from bitcoin core.
Your link also says
Scripts use Bitcoin JSON-RPC API, so it must be enabled in bitcoin.conf (server=1, rpcuser= and rpcpassword= settings).
which means you must have a
bitcoin.conf file in the appropriate directory (
$HOME/.bitcoin/ on Linux unless you specified something else) which contains something like
server=1 rpcuser=digitrader21rpc rpcpassword=jshdfvIu327840hfo8foUih24378786t5vlkjheroIJ98t-89t-!