fix: #7351, display less errors with location and error message

src/meta/build.js

@@ -218,7 +218,7 @@ exports.build = function (targets, options, callback) {
 		},
 	], function (err) {
 		if (err) {
-			winston.error('[build] Encountered error during build step\n' + err.stack ? err.stack : err);
+			winston.error('[build] Encountered error during build step\n' + (err.stack ? err.stack : err));
 			return callback(err);
 		}
 

src/meta/minifier.js

@@ -271,7 +271,8 @@ function buildCSS(data, callback) {
 		javascriptEnabled: true,
 	}, function (err, lessOutput) {
 		if (err) {
-			return callback(err);
+			// display less parser errors properly
+			return callback(new Error(String(err)));
 		}
 
 		postcss(data.minify ? [