Problemsby GlyphLangChain
64 problems166 posts+11 this week
Problem posts per week
LangChain problems
Trouble with OpenAI responses
Top post: "completion_cost() raises ModelNotMappedError for groq/openai/gpt-oss-* responses, even when model=groq/... is", one of 18 posts from 16 people on GitHub issues, Community forums.
LangChain users keep filing bugs
Top post: "langchain 1.4.0: any after_model middleware using documented `jump_to=tools` bypasses the HITL", one of 27 posts from 23 people on GitHub issues, Reddit.
Trouble with n8n workflow
Top post: "How can we promote a dev workflow to prod?", one of 12 posts from 12 people on Community forums, GitHub issues.
Trouble with OpenAI calls
Top post: "Unable to connect to dot calls across mobile, web and desktop", one of 7 posts from 6 people on GitHub issues, Community forums.
Anthropic upgrades break working setups
27 posts from 22 people on GitHub issues.
Trouble with Claude anthropic
Top post: "anthropic: treat Bedrock Claude model IDs like their canonical names in the mid-conversation system message", one of 11 posts from 11 people on GitHub issues, Reddit, Community forums.
Docker upgrades break working setups
11 posts from 11 people on GitHub issues, Stack Overflow.
Qdrant vector search quality is hard to get right
10 posts from 9 people on GitHub issues.
Observability and logging costs outgrow the value
8 posts from 8 people on GitHub issues, Reddit.
Codex runs out of context on real work
6 posts from 6 people on GitHub issues, Reddit, Hacker News.
Trouble with Anthropic cache
Top post: "LLM cache stores a generation that fails structured-output parsing and then replays it", one of 6 posts from 6 people on GitHub issues.
Trouble with Anthropic response
Top post: "mistralai: an error event inside a chat stream is silently dropped, and the truncated output is returned as a", one of 4 posts from 4 people on GitHub issues.
Trouble with OpenAI provider
Top post: "Publish a stable release containing the opencode_go provider (#48140)", one of 4 posts from 4 people on GitHub issues.
Trouble with Claude Code return
Top post: "core: `batch`/`abatch` are typed `list[Output]` even with `return_exceptions=True`", one of 2 posts from 2 people on GitHub issues. Unverified.
LangChain lock-in makes switching costly
2 posts from 2 people on GitHub issues. Unverified.
LangChain fails to return valid structured output
2 posts from 2 people on GitHub issues. Unverified.
Trouble with Claude reduction
One post on GitHub issues: "HSTC, zero-LLM deterministic hybrid compressor (49.2% input-token reduction, measured on n=86 CNN/DailyMail)". Unverified.
MLflow users keep filing bugs
Top post: "`mlflow db move-resources` makes existing proxied (`mlflow-artifacts:/`) artifacts of moved experiments", one of 21 posts from 12 people on GitHub issues.
Claude fails to return valid structured output
10 posts from 8 people on GitHub issues.
RAG on GitHub returns irrelevant or missing context
10 posts from 8 people on GitHub issues, Reddit.
LangChain upgrades break working setups
10 posts from 10 people on GitHub issues, Reddit.
Trouble with LangChain agent
Top post: "langchain-classic: importing a moved agent from `agent_toolkits` raises `ValueError` instead of `ImportError`", one of 8 posts from 7 people on GitHub issues, Reddit, Stack Overflow.
npm users keep filing bugs
Top post: "Unrecognized node type for community packages with a dot in the npm scope", one of 8 posts from 7 people on GitHub issues, Reddit.
RAG on LangChain returns irrelevant or missing context
8 posts from 7 people on Reddit, GitHub issues, Stack Overflow.
RAG on Anthropic returns irrelevant or missing context
5 posts from 5 people on GitHub issues, Reddit.
LangChain agents loop, stall or fail midway
5 posts from 5 people on Reddit, GitHub issues.
Trouble with DeepSeek cloud
Top post: "Request: Add cloud support for DeepSeek-V4.1-Flash", one of 5 posts from 5 people on GitHub issues.
Model Context Protocol fails to return valid structured output
5 posts from 5 people on GitHub issues, Reddit.
Claude deprecations force unplanned migrations
4 posts from 4 people on GitHub issues, App Store reviews.
Trouble with LangChain test
Top post: "langchain: MCP adapter test asserts a POSIX-only error message, fails on Windows where the drive letter", one of 4 posts from 4 people on GitHub issues.
About
Problems here are about LangChain or name it. It is in the companies.fru.dev registry. Website: langchain.com.