small fixes

bot1/chats.py

@@ -1,6 +1,6 @@
 import yaml
 
-from pytgbot.bot.sync import SyncBot
+from pytgbot.bot.synchronous import SyncBot
 from pytgbot.api_types.sendable.inline import (
     InlineQueryResultArticle,
     InputTextMessageContent,

bot1/users.py

@@ -44,6 +44,7 @@ class UserManager(SaveFileMapping):
         self.from_file()
 
     def from_dict(self,d):
+        if not d: return
         for k in d:
             self[k]=User(**d[k])