package/environments/base.js in shakapacker-6.5.3 vs package/environments/base.js in shakapacker-6.5.4

@@ -71,10 +71,10 @@
     const hash = isProduction ? '-[contenthash:8]' : ''
     const MiniCssExtractPlugin = require('mini-css-extract-plugin')
     plugins.push(
       new MiniCssExtractPlugin({
         filename: `css/[name]${hash}.css`,
-        chunkFilename: `css/[id]${hash}.css`.split(),
+        chunkFilename: `css/[id]${hash}.css`,
         // For projects where css ordering has been mitigated through consistent use of scoping or naming conventions,
         // the css order warnings can be disabled by setting the ignoreOrder flag.
         // Read: https://stackoverflow.com/questions/51971857/mini-css-extract-plugin-warning-in-chunk-chunkname-mini-css-extract-plugin-con
         ignoreOrder: config.css_extract_ignore_order_warnings
       })