@import "../../themes/default.less";
webpack@import "themes/default.less";
@import "../../themes/default.less";
webpack@import "themes/default.less";
of course, no problem
post the error message directly ERROR in . app index.less (. node_modules _css-loader@0.23.1@css-loader!. node_modules _less-loader@2.2.3@less-loader!. app index.less) Module build failed: TypeError: Cannot read property lessLoader of undefined ...