@import url('@delon/theme/system/index'); 报错

[tossp]

less中用url('@delon/theme/system/index')的写法报错

> ng-alain-plugin-theme -t=colorLess

error TypeError: Cannot read properties of null (reading '1')
    at C:\Users\ts\proj\html\node_modules\ng-alain-plugin-theme\lib\color-generator.js:44:61
    at Array.map (<anonymous>)
    at combineLess (C:\Users\ts\proj\html\node_modules\ng-alain-plugin-theme\lib\color-generator.js:40:41)
    at generateColorMap (C:\Users\ts\proj\html\node_modules\ng-alain-plugin-theme\lib\color-generator.js:76:28)
    at C:\Users\ts\proj\html\node_modules\ng-alain-plugin-theme\lib\color-generator.js:127:30
    at Generator.next (<anonymous>)
    at C:\Users\ts\proj\html\node_modules\ng-alain-plugin-theme\lib\color-generator.js:8:71
    at new Promise (<anonymous>)
    at __awaiter (C:\Users\ts\proj\html\node_modules\ng-alain-plugin-theme\lib\color-generator.js:4:12)
    at generateTheme (C:\Users\ts\proj\html\node_modules\ng-alain-plugin-theme\lib\color-generator.js:124:12)