不知道什么原因重启后就无法启动程序了

(node:10024) UnhandledPromiseRejectionWarning: Error: session store is unavailable

  Error: session store is unavailable

      at C:\Users\zhuqu\mt-app\node_modules\koa-generic-session\lib\session.js:75:15

      at Generator.next (<anonymous>)

      at step (C:\Users\zhuqu\mt-app\node_modules\koa-generic-session\lib\session.js:3:191)

      at C:\Users\zhuqu\mt-app\node_modules\koa-generic-session\lib\session.js:3:437

      at new Promise (<anonymous>)

      at C:\Users\zhuqu\mt-app\node_modules\koa-generic-session\lib\session.js:3:99

      at getSession (C:\Users\zhuqu\mt-app\node_modules\koa-generic-session\lib\session.js:123:19)

      at C:\Users\zhuqu\mt-app\node_modules\koa-generic-session\lib\session.js:218:28

      at Generator.next (<anonymous>)

      at step (C:\Users\zhuqu\mt-app\node_modules\koa-generic-session\lib\session.js:3:191)

      at C:\Users\zhuqu\mt-app\node_modules\koa-generic-session\lib\session.js:3:437

      at new Promise (<anonymous>)

      at C:\Users\zhuqu\mt-app\node_modules\koa-generic-session\lib\session.js:3:99

      at session (C:\Users\zhuqu\mt-app\node_modules\koa-generic-session\lib\session.js:281:20)

      at dispatch (C:\Users\zhuqu\mt-app\node_modules\koa-compose\index.js:42:32)

      at C:\Users\zhuqu\mt-app\node_modules\koa-compose\index.js:34:12

      at Application.handleRequest (C:\Users\zhuqu\mt-app\node_modules\Koa\lib\application.js:151:12)

      at Server.handleRequest (C:\Users\zhuqu\mt-app\node_modules\Koa\lib\application.js:133:19)

      at emitTwo (events.js:126:13)

      at Server.emit (events.js:214:7)

      at parserOnIncoming (_http_server.js:634:12)

      at HTTPParser.parserOnHeadersComplete (_http_common.js:117:17)