fixed failed build.
fixed failed build.

ngx-formly/ngx-formly,Riron/ng2-formly,ngx-formly/ngx-formly,ngx-formly/ngx-formly,Riron/ng2-formly,formly-js/ng-formly,ngx-formly/ngx-formly,formly-js/ng-formly,Riron/ng2-formly,formly-js/ng2-formly,formly-js/ng2-formly,formly-js/ng2-formly