build: fix prerender test not reporting errors

The prerender test currently does not seem to report errors. This
commit fixes the error reporting.

Author: devversion

src/universal-app/prerender.ts

@@ -26,8 +26,9 @@ result
     writeFileSync(filename, content, 'utf-8');
     console.log('Prerender done.');
   })
-  // If rendering the module factory fails, re-throw the error in order to print the
-  // failure to the console, and to exit the process with a non-zero exit code.
+  // If rendering the module factory fails, print the error and exit the process
+  // with a non-zero exit code.
   .catch(error => {
-    throw error;
+    console.error(error);
+    process.exit(1);
   });