Bitcoin Cash - Trying to implement Explorer in Linux server but getting error
Can you please try replacing bch-node.json file with this:

{
  "network": "testnet",
  "port": 3007,
  "services": [
    "@owstack/bch-explorer-api",
    "bitcoind",
    "web"
  ],
  "servicesConfig": {
    "bitcoind": {
      "spawn": {
        "datadir": "./data",
        "exec": "/usr/local/lib/node_modules/@owstack/bch-node/bin/bitcoind"
      }
    },
    "explorer-api": {
       "rateLimiterOptions": {
         "whitelist": ["::ffff:127.0.0.1"]
       }
    },
    "fee": {
      "rpc": {
        "user": "bitcoin",
        "pass": "local321",
        "host": "127.0.0.1",
        "protocol": "http",
        "port": 18332
      }
    }
  }
}


Because Bitcore won't be able to connect to your node without knowing your RPC username and password.