问这是为啥？怎么超时了？

Unhandled rejection Error: Error: connect ETIMEDOUT

at DB.raw.then.err (/data/release/weapp/tools/initdb.js:41:11)

at tryCatcher (/data/release/weapp/node_modules/bluebird/js/release/util.js:16:23)

at Promise._settlePromiseFromHandler (/data/release/weapp/node_modules/bluebird/js/release/promise.js:512:31)

at Promise._settlePromise (/data/release/weapp/node_modules/bluebird/js/release/promise.js:569:18)

at Promise._settlePromise0 (/data/release/weapp/node_modules/bluebird/js/release/promise.js:614:10)

at Promise._settlePromises (/data/release/weapp/node_modules/bluebird/js/release/promise.js:689:18)

at Async._drainQueue (/data/release/weapp/node_modules/bluebird/js/release/async.js:133:16)

at Async._drainQueues (/data/release/weapp/node_modules/bluebird/js/release/async.js:143:10)

at Immediate.Async.drainQueues (/data/release/weapp/node_modules/bluebird/js/release/async.js:17:14)

at runCallback (timers.js:810:20)

at tryOnImmediate (timers.js:768:5)

at processImmediate [as _immediateCallback] (timers.js:745:5)