스마트 배포 2 truffle deploy --network klaytn

이하와 같이 에러가 나는데 도와주세요!

root@23a894f1ee94:/home# truffle deploy --network klaytn

Using network 'klaytn'.

Running migration: 1_initial_migration.js

  Deploying Migrations...

  ... undefined

Error encountered, bailing. Network state unknown. Review successful transactions manually.

Error: Invalid JSON RPC response: {"id":5,"jsonrpc":"2.0"}

    at Object.InvalidResponse (/usr/lib/node_modules/truffle/build/webpack:/~/web3/lib/web3/errors.js:38:1)

    at /usr/lib/node_modules/truffle/build/webpack:/~/web3/lib/web3/requestmanager.js:86:1

    at /usr/lib/node_modules/truffle/build/webpack:/packages/truffle-migrate/index.js:225:1

    at /usr/lib/node_modules/truffle/build/webpack:/packages/truffle-provider/wrapper.js:134:1

    at /home/node_modules/web3-provider-engine/index.js:149:9

    at /home/node_modules/async/internal/once.js:12:16

    at replenish (/home/node_modules/async/internal/eachOfLimit.js:61:25)

    at /home/node_modules/async/internal/eachOfLimit.js:71:9

    at eachLimit (/home/node_modules/async/eachLimit.js:43:36)

    at /home/node_modules/async/internal/doLimit.js:9:16

    at end (/home/node_modules/web3-provider-engine/index.js:124:5)

    at /home/node_modules/async/internal/once.js:12:16

    at next (/home/node_modules/async/waterfall.js:21:29)

    at /home/node_modules/async/internal/onlyOnce.js:12:16

    at /home/node_modules/async/internal/once.js:12:16

    at next (/home/node_modules/async/waterfall.js:21:29)

    at /home/node_modules/async/internal/onlyOnce.js:12:16

    at /home/node_modules/web3-provider-engine/subproviders/hooked-wallet.js:374:7

    at /home/node_modules/async/internal/once.js:12:16

    at next (/home/node_modules/async/waterfall.js:21:29)

    at /home/node_modules/async/internal/onlyOnce.js:12:16

    at /home/node_modules/web3-provider-engine/subproviders/hooked-wallet.js:402:5