Update session.py

session.py

@@ -14,7 +14,7 @@ from utils import log
 class Session:
     """Single chat session."""
 
-    def __init__(self, project_name: str):
+    def __init__(self, project_name: str, version_config=None):
         self.session_id: str = str(uuid.uuid4())
         self.project_name: str = project_name
         self.version_number: int = version_config.id if version_config else None