Failed to load assistants

[bilallamal07]

For some reasons l`m getting this error, have double checked export TAVILY_API_KEY

Please verify if the API server is running or accessible from the browser.

TypeError: Failed to fetch

[hinthornw]

Did your server successfully start?

[bilallamal07]

issue fixed Disable Ad Blockers or Privacy Extensions
Temporarily disable any ad-blocking or privacy-protection extensions in your browser.
Example: For uBlock Origin, click the extension icon and disable blocking for the site.

[garethcurtis]

I'm getting the same error. Not got any privacy blockers on. TAVILY_API_KEY is set via export.

` Built research-rabbit @ file:///Users/garethcurtis/Documents/Hyperlogik/research-
Installed 66 packages in 51ms
INFO:langgraph_api.cli:

    Welcome to

╦ ┌─┐┌┐┌┌─┐╔═╗┬─┐┌─┐┌─┐┬ ┬
║ ├─┤││││ ┬║ ╦├┬┘├─┤├─┘├─┤
╩═╝┴ ┴┘└┘└─┘╚═╝┴└─┴ ┴┴ ┴ ┴

• 🚀 API: http://127.0.0.1:2024
• 🎨 Studio UI: https://smith.langchain.com/studio/?baseUrl=http://127.0.0.1:2024
• 📚 API Docs: http://127.0.0.1:2024/docs

This in-memory server is designed for development and testing.
For production use, please use LangGraph Cloud.

2025-01-07T17:34:50.718562Z [info ] Will watch for changes in these directories: ['/Users/garethcurtis/Documents/Hyperlogik/research-rabbit'] [uvicorn.error] api_variant=local_dev
2025-01-07T17:34:50.718686Z [info ] Uvicorn running on http://127.0.0.1:2024 (Press CTRL+C to quit) [uvicorn.error] api_variant=local_dev color_message=Uvicorn running on %s://%s:%d (Press CTRL+C to quit)
2025-01-07T17:34:50.718796Z [info ] Started reloader process [34660] using WatchFiles [uvicorn.error] api_variant=local_dev color_message=Started reloader process [34660] using WatchFiles
2025-01-07T17:34:51.336817Z [info ] Using auth of type=noop [langgraph_api.auth.middleware] api_variant=local_dev
2025-01-07T17:34:51.338635Z [info ] Started server process [34667] [uvicorn.error] api_variant=local_dev color_message=Started server process [%d]
2025-01-07T17:34:51.338684Z [info ] Waiting for application startup. [uvicorn.error] api_variant=local_dev
2025-01-07T17:34:51.923318Z [info ] Registering graph with id 'research_rabbit' [langgraph_api.graph] api_variant=local_dev graph_id=research_rabbit
2025-01-07T17:34:51.924253Z [info ] Application startup complete. [uvicorn.error] api_variant=local_dev
2025-01-07T17:34:51.924367Z [info ] Starting 1 background workers [langgraph_api.queue] api_variant=local_dev
2025-01-07T17:34:51.924525Z [info ] Worker stats [langgraph_api.queue] active=0 api_variant=local_dev available=1 max=1
2025-01-07T17:34:51.924678Z [info ] Queue stats [langgraph_api.queue] api_variant=local_dev max_age_secs=None med_age_secs=None n_pending=0
🎨 Opening Studio in your browser...
2025-01-07T17:34:52.761448Z [info ] GET /ok 200 0ms [langgraph_api.server] api_variant=local_dev latency_ms=0 method=GET path=/ok path_params={} proto=1.1 query_string= req_header={'accept-encoding': 'identity', 'host': '127.0.0.1:2024', 'user-agent': 'Python-urllib/3.11', 'connection': 'close'} res_header={'content-length': '11', 'content-type': 'application/json'} route=None status=200
2025-01-07T17:34:52.761491Z [info ] 🎨 Opening Studio in your browser... [browser_opener] api_variant=local_dev message=🎨 Opening Studio in your browser...
URL: https://smith.langchain.com/studio/?baseUrl=http://127.0.0.1:2024
2025-01-07T17:34:52.761561Z [info ] URL: https://smith.langchain.com/studio/?baseUrl=http://127.0.0.1:2024 [browser_opener] api_variant=local_dev message=URL: https://smith.langchain.com/studio/?baseUrl=http://127.0.0.1:2024`

garethcurtis@Gareths-MacBook-Pro ~ % curl 127.0.0.1:2024
Not Found%

Then smith.langchain.com says:

Failed to load assistants
Please verify if the API server is running or accessible from the browser.
TypeError: Load failed

Looks like Uvicorn is failing:

2025-01-07T17:34:50.718686Z [info ] Uvicorn running on http://127.0.0.1:2024 (Press CTRL+C to quit) [uvicorn.error] api_variant=local_dev color_message=Uvicorn running on %s://%s:%d (Press CTRL+C to quit) 2025-01-07T17:34:50.718796Z [info ] Started reloader process [34660] using WatchFiles [uvicorn.error] api_variant=local_dev color_message=Started reloader process [34660] using WatchFiles

Any ideas please?

[garethcurtis]

Took another look at this - seems it just doesn't like Safari. Chrome seems to work ok. Might be worth adding a note to the docs unless I missed that somewhere. Thanks.

[lewiswatson55]

Just wanted to add a +1 to this issue, works no problem on my Mac on chrome but safari seems to be blocking connection to the API.

[s22]

Failed to load assistants
Please verify if the API server is running or accessible from the browser.
TypeError: Load failed

[valinagacevschi]

It works in Chrome in Incognito WIndow. A bit bizare.

[levibrown]

I had the same issue in Brave. Fixed after turning the brave shields off.

[rlancemartin]

I'm tagging @hinthornw and @dqbd on this.

[dqbd]

Hello! Will update the connection guide to give more clear guidance when failing to access local services.

[asasidh]

I got this error and to fix it all I had to do that was remove brave shields for this site.

[emmette]

Had this issue w/ Safari on MacOS (error message below). I can confirm that switching to a recent Chrome build worked. Suspect it is the Safari private relay that breaks things.

Failed to load assistants
Please verify if the API server is running or accessible from the browser.
TypeError: Load failed

[iliasaz]

Same here except Chrome with/without Incognito doesn't work either. MacOS 15.1.1, Private relay is off. The server is up, but http://127.0.0.1:2024 returns 404

[rlancemartin]

Tagging @lc-arjun @dqbd ... they recently merged configuration tab w/ assistants.

We should be sure:
1/ ideally the issue is resolved w/ setting assistants
2/ but if it is not, we do not block users from setting configuration

At least before, users could still set configuration even if assistants could not be loaded.

cc: @hinthornw