css中有一句 mask-image: linear-gradient(to 20, rgba(0, 0, 0, 0), rgba(0, 0, 0, 1)); 编译为微信小程序无法成功，去掉立马编译成功了。错误信息如下
HBuilder] 16:23:06.434 ERROR Error: CSS minification error: Cannot read property 'length' of undefined. File: pages/live/live.wxss
[HBuilder] 16:23:06.445 Error: CSS minification error: Cannot read property 'length' of undefined. File: pages/live/live.wxss
[HBuilder] 16:23:06.446 at /Applications/HBuilderX.app/Contents/HBuilderX/plugins/uniapp-cli/node_modules/@dcloudio/vue-cli-plugin-uni/packages/@intervolga/optimize-cssnano-plugin/index.js:106:21
[HBuilder] 16:23:06.457 at <anonymous>
