bugfix

src/gadget.py

@@ -1,4 +1,5 @@
 import os
+from io import StringIO, BytesIO
 import sys
 import argparse
 # from dataui.bricks_parser import BricksCRUDProcessor
@@ -49,4 +50,7 @@ if __name__ == '__main__':
 	logger.debug(f'debug mode show ?')
 	port = args.port or config.website.port or 8080
 	port = int(port)
+	g = ServerEnv()
+	g.StringIO = StringIO
+	g.BytesIO = BytesIO
 	server.run(port=port)