fix "Code: -32600, Message: Invalid request" when using with hardhat

[rpuntaie]

params is wrong:

{"jsonrpc":"2.0","id":0,"method":"eth_gasPrice","params":null}

With [] instead of null it does not happen.

It happened with

npx hardhat node

It didn't happen when using

docker run --name geth-test -d -p 8545:8545 -p 8546:8546 ethereum/client-go:v1.10.15 --dev --datadir /eth1data --ipcpath /eth1data/geth.ipc --http --http.addr 0.0.0.0 --http.api eth,net,web3,debug --ws --ws.addr 0.0.0.0 --verbosity 4

[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
ethgo	❌ Failed (Inspect)			Oct 30, 2024 5:01pm