Rollup error logs (#5289)

* Log errors in rollup build

* fix codacy

rollup/build.js

@@ -50,7 +50,8 @@ function build_assets(app) {
 
 function build(inputOptions, outputOptions) {
 	return rollup.rollup(inputOptions)
-		.then(bundle => bundle.write(outputOptions));
+		.then(bundle => bundle.write(outputOptions))
+		.catch(err => log(chalk.red(err)));
 }
 
 function build_libs() {