lightningd: WARNING: default network changing in 2020: please set network=testnet in config!
Could not connect to bitcoind using bitcoin-cli. Is bitcoind running?
Make sure you have bitcoind running and that bitcoin-cli is able to connect to bitcoind.
You can verify that your Bitcoin Core installation is ready for use by running:
$ bitcoin-cli -testnet echo ‘hello world’
2020-08-09T21:22:44.513Z INFO plugin-bcli: Killing plugin: Plugin exited before completing handshake.
The Bitcoin backend died.
I have checked and `bitcoind` *is* running. I followed the instructions on [bitcoin.org](https://bitcoin.org) and used the tar.gz file to install Bitcoin Core. I am trying to follow [this guide](https://andrewgriffithsonline.com/blog/180330-how-to-setup-a-lightning-node/) to set up a Lightning node. I have also checked that the initial block download has completed.
I don’t want to run on the testnet, which is what I assume will happen if I change the `bitcoin.conf` file to set `network=testnet`, I want to run the node on the mainnet. How can I do this?