Do not prevent a project to be deleted. Fixes #2237.

gns3server/controller/project.py

@@ -680,8 +680,13 @@ class Project:
 
     @asyncio.coroutine
     def delete(self):
+
         if self._status != "opened":
-            yield from self.open()
+            try:
+                yield from self.open()
+            except aiohttp.web.HTTPConflict as e:
+                # ignore missing images or other conflicts when deleting a project
+                log.warning("Conflict while deleting project: {}".format(e.text))
         yield from self.delete_on_computes()
         yield from self.close()
         try:

gns3server/web/route.py

@@ -211,12 +211,12 @@ class Route(object):
                     response = Response(request=request, route=route)
                     response.set_status(409)
                     response.json({"message": str(e), "status": 409, "exception": e.__class__.__name__})
-                except (ImageMissingError) as e:
+                except ImageMissingError as e:
                     log.error("Image missing error detected: {}".format(e.image))
                     response = Response(request=request, route=route)
                     response.set_status(409)
                     response.json({"message": str(e), "status": 409, "image": e.image, "exception": e.__class__.__name__})
-                except asyncio.futures.CancelledError as e:
+                except asyncio.futures.CancelledError:
                     response = Response(request=request, route=route)
                     response.set_status(408)
                     response.json({"message": "Request canceled", "status": 408})