Fix some potential issues.

comfy/clip_vision.py

@@ -92,8 +92,11 @@ def load_clipvision_from_sd(sd, prefix="", convert_keys=False):
         json_config = os.path.join(os.path.dirname(os.path.realpath(__file__)), "clip_vision_config_g.json")
     elif "vision_model.encoder.layers.30.layer_norm1.weight" in sd:
         json_config = os.path.join(os.path.dirname(os.path.realpath(__file__)), "clip_vision_config_h.json")
-    else:
+    elif "vision_model.encoder.layers.22.layer_norm1.weight" in sd:
         json_config = os.path.join(os.path.dirname(os.path.realpath(__file__)), "clip_vision_config_vitl.json")
+    else:
+        return None
+
     clip = ClipVisionModel(json_config)
     m, u = clip.load_sd(sd)
     if len(m) > 0:

comfy/sd.py

@@ -434,10 +434,11 @@ def load_checkpoint_guess_config(ckpt_path, output_vae=True, output_clip=True, o
     if output_clip:
         w = WeightsLoader()
         clip_target = model_config.clip_target()
-        clip = CLIP(clip_target, embedding_directory=embedding_directory)
-        w.cond_stage_model = clip.cond_stage_model
-        sd = model_config.process_clip_state_dict(sd)
-        load_model_weights(w, sd)
+        if clip_target is not None:
+            clip = CLIP(clip_target, embedding_directory=embedding_directory)
+            w.cond_stage_model = clip.cond_stage_model
+            sd = model_config.process_clip_state_dict(sd)
+            load_model_weights(w, sd)
 
     left_over = sd.keys()
     if len(left_over) > 0: