From 54ddde9d4c73a31cb921420867231542ae7faa72 Mon Sep 17 00:00:00 2001 From: vbarda Date: Wed, 14 May 2025 21:30:22 -0400 Subject: [PATCH] update --- libs/langgraph/langgraph/pregel/draw.py | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/libs/langgraph/langgraph/pregel/draw.py b/libs/langgraph/langgraph/pregel/draw.py index 5b84c30c7..3ece304f6 100644 --- a/libs/langgraph/langgraph/pregel/draw.py +++ b/libs/langgraph/langgraph/pregel/draw.py @@ -108,7 +108,11 @@ def draw_graph( for w in task.writers: # apply regular writes if isinstance(w, ChannelWrite): - empty_input = "" if "__root__" in specs else None + empty_input = ( + specs["__root__"].ValueType() + if "__root__" in specs + else None + ) w.invoke(empty_input, task.config) # apply conditional writes declared for static analysis, only once if w not in static_seen: