bin/postcss in jekyll-postcss-0.4.1 vs bin/postcss in jekyll-postcss-0.5.0

@@ -5,14 +5,14 @@
 const net = require("net");
 
 class PostCSS {
   static process(data, write) {
     postcss(config.plugins)
-      .process(JSON.parse(data).raw_content, { from: "stdin" })
+      .process(JSON.parse(data).raw_content, { from: undefined })
       .then((result) => write(result))
       .catch((error) => {
         console.error("PostCSS Error!\n");
-        console.error(error.toString());
+        console.error(error);
       });
   }
 
   static startServer() {
     const server = net.createServer((c) => {