这个点到底怎样去看哪里报出来的

Question

log打出来的问题

25 02 2018 18:36:12.725:WARN [web-server]: 404: /base/node_modules/rxjs/Observable
25 02 2018 18:36:12.736:WARN [web-server]: 404: /base/node_modules/rxjs/observable/merge
25 02 2018 18:36:12.744:WARN [web-server]: 404: /base/node_modules/rxjs/operator/share
25 02 2018 18:36:12.766:WARN [web-server]: 404: /base/node_modules/rxjs/Subject
25 02 2018 18:37:11.977:WARN [web-server]: 404: /base/node_modules/systemjs/dist/system.src.js.map
25 02 2018 18:37:11.985:WARN [web-server]: 404: /base/node_modules/reflect-metadata/Reflect.js.map

浏览器显示的问题 我真的真的找不出这问题出于哪 求求哪位大哥大神能帮忙搞一把