Navigator cannot jump after weex uses vue_router

navigator jumps normally when not using vue_router, and the error is reported as follows:
ReportException: Exception: Error: Module build failed: Error: Cannot find module "babel-core"

    at Function.Module._resolveFilename (module.js:547:15)
    at Function.Module._load (module.js:474:25)
    at Module.require (module.js:596:17)
    at require (internal/module.js:11:18)
    at Object.<anonymous> (/usr/local/lib/node_modules/weex-toolkit/node_modules/_babel-loader@7.1.5@babel-loader/lib/index.js:3:13)
    at Module._compile (module.js:652:30)
    at Object.Module._extensions..js (module.js:663:10)
    at Module.load (module.js:565:32)
    at tryModuleLoad (module.js:505:12)
    at Function.Module._load (module.js:497:3)
    at Module.require (module.js:596:17)
    at require (internal/module.js:11:18)
    at loadLoader (/usr/local/lib/node_modules/weex-toolkit/node_modules/_loader-runner@2.3.1@loader-runner/lib/loadLoader.js:13:17)
    at iteratePitchingLoaders (/usr/local/lib/node_modules/weex-toolkit/node_modules/_loader-runner@2.3.1@loader-runner/lib/LoaderRunner.js:169:2)
    at runLoaders