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/.realio-network/config/genesis.json "https://snapshot-de-1.genznodes.dev/realio/genesis.json"
shasum -a 256 $HOME/.realio-network/config/genesis.json
## output
cb7bff90eb083bed331e46aa6d8d3aef676d7efcce7d219d2a1bca3215fa80eb ~/.realio-network/config/genesis.json