show message when parse subtree error

render-process/TreeTabs.tsx

@@ -79,11 +79,9 @@ export default class TreeTabs extends Component<TreeTabsProps, TreeTabsState> {
             }
 
             const settings = Utils.getRemoteSettings();
-            const workdir = settings.workdir;
-            const files = fs.readdirSync(workdir).filter((f) => {
+            const files = fs.readdirSync(settings.workdir).filter((f) => {
                 return f.endsWith(".json");
             });
-            fs.mkdirSync(workdir + "/../build", { recursive: true });
             for (const path of files) {
                 const buildpath = buildDir + "/" + path;
                 console.log("build:", buildpath);