From fcf0e4515f9ac99d7b8168890ba946e08740153b Mon Sep 17 00:00:00 2001
From: Dan <14043624+delivrance@users.noreply.github.com>
Date: Tue, 3 Apr 2018 14:54:34 +0200
Subject: [PATCH] Don't try to stop a non-started Client

---
 pyrogram/client/client.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pyrogram/client/client.py b/pyrogram/client/client.py
index 08e0e117..be04db75 100644
--- a/pyrogram/client/client.py
+++ b/pyrogram/client/client.py
@@ -245,6 +245,9 @@ class Client:
         """Use this method to manually stop the Client.
         Requires no parameters.
         """
+        if not self.is_started:
+            raise ConnectionError("Client is already stopped")
+
         self.is_started = False
         self.session.stop()