[Overig] Front-end projectcompilatie Kan geen eigenschappen instellen van ongedefinieerd (instelling 'ouder')

fout in ./src/components/NumberInfo/NumberInfo.vue?vue&type=style&index=0&id=4370c5af&lang=less&scoped=true

Syntaxisfout: TypeError: Kan eigenschappen van ongedefinieerd niet instellen (instelling 'ouder')

@ ./node_modules/vue-style-loader?? ref--10-OneOf-1-0!. /node_modules/css-loader?? ref--10-OneOf-1-1!. /node_modules/vue-loader/lib/loaders/stylePostLoader.js!. /node_modules/postcss-loader/src?? ref--10-OneOf-1-2!. /node_modules/less-loader/dist/cjs.js?? ref--10-OneOf-1-3!. /node_modules/cache-loader/dist/cjs.js??
ref--0-0!. /node_modules/vue-loader/lib?? vue-loader-options!. /src/components/NumberInfo/NumberInfo.vue?vue&type=style&index=0&id=4370c5af&lang=less&scoped=true 4:14-482 15:3-20:5 16:22-490
@ ./src/components/NumberInfo/NumberInfo.vue?vue&type=style&index=0&id=4370c5af&lang=less&scoped=true
@ ./src/components/NumberInfo/NumberInfo.vue
@ ./src/components/NumberInfo/index.js
@ ./node_modules/cache-loader/dist/cjs.js?? ref--12-0!. /node_modules/babel-loader/lib!. /node_modules/cache-loader/dist/cjs.js?? ref--0-0!. /node_modules/vue-loader/lib?? vue-loader-options!. /src/views/Home.vue?vue&type=script&lang=js
@ ./src/views/Home.vue?vue&type=script&lang=js
@ ./src/views/Home.vue
@ ./src/config/router.config.js
@ ./src/router/index.js
@ ./src/utils/request.js
@ ./src/main.js
@ multi (webpack)-dev-server/client?http://192.168.232.246:3000/sockjs-node(webpack)/hot/dev-server.js ./src/main.js