Catch the "WinError 0 The operation completed successfully" exception at a higher level.

gns3server/main.py

@@ -181,6 +181,10 @@ def main():
     server = Server.instance(host, port)
     try:
         server.run()
+    except OSError as e:
+        # This is to ignore OSError: [WinError 0] The operation completed successfully exception on Windows.
+        if not sys.platform.startswith("win") and not e.winerror == 0:
+            raise
     except Exception as e:
         log.critical("Critical error while running the server: {}".format(e), exc_info=1)
         CrashReport.instance().capture_exception()