运行gulp时映射无效

我试图在节点控制台中运行gulp，我得到如下错误。我在网上寻找一个解决方案，但到目前为止还没有任何效果。希望你能帮助我

C:\xampp\htdocs\wicie\wp-content\themes\domki-wicie\node_modules\source-map\lib\source-map-generator.js:298
      throw new Error('Invalid mapping: ' + JSON.stringify({
      ^

Error: Invalid mapping: {"generated":{"line":157,"column":3},"source":"../bower_components/bootstrap/scss/mixins/_hover.scss","original":{"line":12,"column":-19},"name":null}
    at SourceMapGenerator_validateMapping [as _validateMapping] (C:\xampp\htdocs\wicie\wp-content\themes\domki-wicie\node_modules\source-map\lib\source-map-generator.js:298:13)
    at SourceMapGenerator_addMapping [as addMapping] (C:\xampp\htdocs\wicie\wp-content\themes\domki-wicie\node_modules\source-map\lib\source-map-generator.js:110:12)
    at C:\xampp\htdocs\wicie\wp-content\themes\domki-wicie\node_modules\concat-with-sourcemaps\index.js:60:28
    at Array.forEach ()
    at BasicSourceMapConsumer.SourceMapConsumer_eachMapping [as eachMapping] (C:\xampp\htdocs\wicie\wp-content\themes\domki-wicie\node_modules\source-map\lib\source-map-consumer.js:157:14)
    at Concat.add (C:\xampp\htdocs\wicie\wp-content\themes\domki-wicie\node_modules\concat-with-sourcemaps\index.js:58:18)
    at DestroyableTransform.bufferContents [as _transform] (C:\xampp\htdocs\wicie\wp-content\themes\domki-wicie\node_modules\gulp-concat\index.js:68:12)
    at DestroyableTransform.Transform._read (C:\xampp\htdocs\wicie\wp-content\themes\domki-wicie\node_modules\readable-stream\lib\_stream_transform.js:182:10)
    at DestroyableTransform.Transform._write (C:\xampp\htdocs\wicie\wp-content\themes\domki-wicie\node_modules\readable-stream\lib\_stream_transform.js:170:83)
    at doWrite (C:\xampp\htdocs\wicie\wp-content\themes\domki-wicie\node_modules\readable-stream\lib\_stream_writable.js:406:64)

节点版本-8.9.4 npm版本-5.6.0 源地图版本-0.6.1

我发现：