I run:

geth --rinkeby --rpc --rpcport=8545 --rpcaddr=localhost --allow-insecure-unlock

It works in console:

 geth attach http://192.168.1.37:8545

> eth.syncing
false
> eth.accounts
["0xb4e4634e9eebb5a741b6c6beb7afb7746c09cbfc"]

Truffle migrate also works with

module.exports = {
  networks: {
    "geth": {
      network_id: "*",
      host: "localhost",
      port: 8545
    },
  }
};

But when I run:

Web3 = require('web3')
web3 = new Web3(new Web3.providers.HttpProvider("http://localhost:8545"));

console.log(web3.currentProvider);
web3.eth.getAccounts().then(e => console.log(e));

I takes a couple of minutes and I get:

Error: Invalid JSON RPC response: ""

I doesn't matter what version I use. Currently using:

geth: 1.9.6-stable

web3: 1.2.1

Truffle v5.0.38

Any ideas? Please!

I run:

geth --rinkeby --rpc --rpcport=8545 --rpcaddr=192.168.1.37 

It works in console:

 geth attach http://192.168.1.37:8545

> eth.syncing
false
> eth.accounts
["0xb4e4634e9eebb5a741b6c6beb7afb7746c09cbfc"]

Truffle migrate also works with

module.exports = {
  networks: {
    "geth": {
      network_id: "*",
      host: "192.168.1.37",
      port: 8545
    },
  }
};

But when I run:

Web3 = require('web3')
web3 = new Web3(new Web3.providers.HttpProvider("http://192.168.1.37:8545"));

console.log(web3.currentProvider);
web3.eth.getAccounts().then(e => console.log(e));

I takes a couple of minutes and I get:

Error: Invalid JSON RPC response: ""

When I use --rpcaddress=localhost it works but of course only from localhost

I doesn't matter what version I use. Currently using:

geth: 1.9.6-stable

web3: 1.2.1

Truffle v5.0.38

Any ideas? Please!