fix json load encoding bug

src/tree.py

@@ -30,7 +30,7 @@ def dump_json(p, j, exist_ok=False, override=False):
             logger.error(f"{p} already exist")
             sys.exit(0)
 
-    with open(p, 'w+') as f:
+    with open(p, 'w+', encoding='utf-8') as f:
         f.write(json.dumps(j, indent=2, ensure_ascii=False))