theme选项配置@primary-color使用css变量报错

[maxshic]

theme: {
'@primary-color': 'var(--ant-primary-color, #1890ff)',
'@border-radius-base': '5px',
'@btn-border-radius-base': '5px'
}
像这种配置报错了
@primary-color-active: color(~colorPalette('@{primary-color}', 7) );
@primary-color-outline: fade(@primary-color, @outline-fade);
^
Error evaluating function fade: Argument cannot be evaluated to a color
in E:\gitLab\mall-admin\node_modules\antd\es\style\themes\default.less (line 20, column 24)