Minification error with Vue-Cli 3

[elymatos]

Hi,
Trying to build an app with Vue-cli 3 + Typescript, I'm getting an error of "word unknown" in the process postcss.
Digging a lot, I found the problem is with the rules in easyui.css (for tooltip) - for all themes,  I guess:
  _border-color: tomato;
  _filter: chroma(color=tomato);
I comment both lines and get to build. I don't know the exact problem, but this is blocking the building.
Thanks,
Ely

[srw962]

I use Vue-Cli3 + javascript，get the same error：
$ vue-cli-service build --mode production --dest dist --target app --dashboard


-  Building for production...

 ERROR  Error: CSS minification error: E:\vue\hello-world\css\chunk-vendors.c84fc929.css:3131:12: Unknown word. File: css/chunk-vendors.c84fc929.css

Error: CSS minification error: E:\vue\hello-world\css\chunk-vendors.c84fc929.css:3131:12: Unknown word. File: css/chunk-vendors.c84fc929.css
    at E:\vue\hello-world\node_modules\@intervolga\optimize-cssnano-plugin\index.js:106:21

[stworthy]

Please update to a newer version to solve this issue.