HTTPStatusError: Client error '422 Unprocessable Entity

[kihumban]

I am getting the following error message invoke our graph with this code

`input = {"messages": [{"role": "user", "content": "what's the weather in atlanta"}]}

assistant_id = "agent"

async for chunk in client.runs.stream(
thread["thread_id"],
assistant_id,
input=input,
stream_mode="updates",
):
print(f"Receiving new event of type: {chunk.event}...")
print(chunk.data)
print("\n\n")`

Error:
`---------------------------------------------------------------------------
HTTPStatusError Traceback (most recent call last)
Cell In[7], line 5
1 input = {"messages": [{"role": "user", "content": "what's the weather in atlanta"}]}
3 assistant_id = "agent"
----> 5 async for chunk in client.runs.stream(
6 thread["thread_id"],
7 assistant_id,
8 input=input,
9 stream_mode="updates",
10 ):
11 print(f"Receiving new event of type: {chunk.event}...")
12 print(chunk.data)

File /Library/Frameworks/Python.framework/Versions/3.12/lib/python3.12/site-packages/langgraph_sdk/client.py:295, in HttpClient.stream(self, path, method, json)
293 else:
294 logger.error(f"Error from langgraph-api: {body}", exc_info=e)
--> 295 raise e
296 async for event in sse.aiter_sse():
297 yield StreamPart(
298 event.event, orjson.loads(event.data) if event.data else None
299 )

File /Library/Frameworks/Python.framework/Versions/3.12/lib/python3.12/site-packages/langgraph_sdk/client.py:288, in HttpClient.stream(self, path, method, json)
284 async with httpx_sse.aconnect_sse(
285 self.client, method, path, headers=headers, content=content
286 ) as sse:
287 try:
--> 288 sse.response.raise_for_status()
289 except httpx.HTTPStatusError as e:
290 body = (await sse.response.aread()).decode()

File /Library/Frameworks/Python.framework/Versions/3.12/lib/python3.12/site-packages/httpx/_models.py:761, in Response.raise_for_status(self)
759 error_type = error_types.get(status_class, "Invalid status code")
760 message = message.format(self, error_type=error_type)
--> 761 raise HTTPStatusError(message, request=request, response=self)

HTTPStatusError: Client error '422 Unprocessable Entity' for url 'http://localhost:8123/threads/cecf2e39-ccfa-44b5-817e-f1394a560b21/runs/stream'
For more information check: https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/422
Invalid assistant ID`

I am using Chrome and not Mozilla

[vbarda]

@kihumban is your graph name “agent” in langgraph.json? it looks like a name mismatch