diff --git a/handler.py b/handler.py
index be571e7..be46620 100644
--- a/handler.py
+++ b/handler.py
@@ -446,6 +446,18 @@ def handler(job: dict) -> dict:
         # Inject parameters into workflow
         workflow = inject_wan22_params(workflow, params)
 
+        # Debug: print key nodes to verify connections
+        print("=== Workflow Debug ===")
+        for node_id in ["117", "116", "115", "158", "140", "156", "144", "145"]:
+            if node_id in workflow:
+                node = workflow[node_id]
+                print(f"Node {node_id} ({node['class_type']}):")
+                for k, v in node['inputs'].items():
+                    if isinstance(v, list):
+                        print(f"  {k}: -> node {v[0]} slot {v[1]}")
+                    else:
+                        print(f"  {k}: {repr(v)[:50]}")
+
         # Queue workflow
         client_id = uuid.uuid4().hex
         prompt_id = queue_workflow(workflow, client_id)