grunt-contrib-sass抛出“无法找到一个名为”的选项错误

突然间,我的grunt-contrib-sass任务正在抛出无法在构建中找到名为“sourcemap”错误的选项.我目前安装了sass 3.5.1并使用grunt-contrib-sass 1.0.0.可能导致这种情况的任何想法？这是我看到的输出：

Could not find an option named "sourcemap".
Usage: dart-sass <input>
-s,--style         Output style.
                    [expanded (default)]
-c,--[no-]color    Whether to emit terminal colors.
    --[no-]trace    Print full Dart stack traces for exceptions.
-h,--Help          Print this usage information.
    --version       Print the version of Dart Sass.
Warning: Exited with error code 64 Used --force,conTinuing.
Done,but with warnings.
Process terminated with @R_882_6756@.

并且,这不是编译CSs.思考？