Tendermint node crashed

[san-lee-ai]

I tried to run node app.js but got an error as follows:

Error: Tendermint node crashed
    at ChildProcess.tendermintProcess.on (/Users/shlee/dvlp/dApp/6Cosmos/lotion-coin/node_modules/lotion/index.js:239:13)
    at ChildProcess.emit (events.js:180:13)
    at maybeClose (internal/child_process.js:936:16)
    at Socket.stream.socket.on (internal/child_process.js:353:11)
    at Socket.emit (events.js:180:13)
    at Pipe._handle.close [as _onclose] (net.js:541:12)

Any idea?