Updated for python 3.9 compat

parts/server.py

@@ -324,7 +324,8 @@ def connect(user, password, db, host='localhost', port=5432):
     con = sqlalchemy.create_engine(url, client_encoding='utf8')
 
     # We then bind the connection to MetaData()
-    meta = sqlalchemy.MetaData(bind=con, reflect=True)
+    meta = sqlalchemy.MetaData(bind=con)
+    meta.reflect(bind=con)
 
     return con, meta