Download genesis file, if you need. Also be sure to verify the genesis sha256 checksum before starting your node.
Genesis Info
Instructions with terminal
wget -O $HOME/.side/config/genesis.json "https://snapshot-de-1.genznodes.dev/side/genesis.json"
shasum -a 256 $HOME/.side/config/genesis.json
## output
2c6a6044de04cfdd466c9b114f0082af46c18519dc0ee413d2250de435b5d669 ~/.side/config/genesis.json