From aaaeb410d5cc7430080ff59ea8f7b811192ee432 Mon Sep 17 00:00:00 2001
From: grossmj <grossmj@gns3.net>
Date: Tue, 12 Mar 2019 21:50:09 +0700
Subject: [PATCH] Fix exception when loading and quickly closing a project.

---
 gns3server/controller/project.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/gns3server/controller/project.py b/gns3server/controller/project.py
index 76a2396b..af55b80b 100644
--- a/gns3server/controller/project.py
+++ b/gns3server/controller/project.py
@@ -744,7 +744,8 @@ class Project:
         os.remove(snapshot.path)
 
     async def close(self, ignore_notification=False):
-        if self._status == "closed":
+        if self._status == "closed" or self._loading:
+            log.debug("Closing project '{}' ignored because it is already closed or being loaded".format(self.name))
             return
         await self.stop_all()
         for compute in list(self._project_created_on_compute):