安装了less4j插件，为什么编译less文件报错，相同less在koala编译通过了

安装了less4j插件，为什么编译less文件报错，相同less在koala编译通过了

自动编译(\后台框架--less拆分\css\frame\frame.less)失败：
no viable alternative at input '=' in expression (which started at 33:55)
extraneous input '0' expecting ')' in abstract mixin or namespace (which started at 33:1)
no viable alternative at input '=' in expression (which started at 35:59)
extraneous input '0' expecting ')' in abstract mixin or namespace (which started at 35:1)