From 5c363a9d86827d194e3a8e5dd6085a67f65c7ee6 Mon Sep 17 00:00:00 2001
From: comfyanonymous <comfyanonymous@protonmail.com>
Date: Fri, 1 Sep 2023 02:01:08 -0400
Subject: [PATCH] Fix controlnet bug.

---
 comfy/controlnet.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/comfy/controlnet.py b/comfy/controlnet.py
index f62dd9c8..490be6bb 100644
--- a/comfy/controlnet.py
+++ b/comfy/controlnet.py
@@ -143,7 +143,7 @@ class ControlNet(ControlBase):
                 if control_prev is not None:
                     return control_prev
                 else:
-                    return {}
+                    return None
 
         output_dtype = x_noisy.dtype
         if self.cond_hint is None or x_noisy.shape[2] * 8 != self.cond_hint.shape[2] or x_noisy.shape[3] * 8 != self.cond_hint.shape[3]: