Fix webpack-dev-server web-socket error
Fix webpack-dev-server web-socket error

LuckeyHomes/ng-admin,ulrobix/ng-admin,marmelab/ng-admin,ulrobix/ng-admin,LuckeyHomes/ng-admin,ulrobix/ng-admin,jainpiyush111/ng-admin,jainpiyush111/ng-admin,vasiakorobkin/ng-admin,eBoutik/ng-admin,jainpiyush111/ng-admin,vasiakorobkin/ng-admin,jainpiyush111/ng-admin,SebLours/ng-admin,eBoutik/ng-admin,SebLours/ng-admin,marmelab/ng-admin,LuckeyHomes/ng-admin,marmelab/ng-admin,eBoutik/ng-admin