3 articles
RSSHow to fix Langfuse errors — Python/JS SDK init, trace/span/generation hierarchy, LangChain CallbackHandler, OpenAI wrapper, missing usage/cost data, prompt management, and self-hosted Postgres setup.
How to fix LangGraph errors — state not updating between nodes, checkpointer thread_id required, StateGraph compile error, conditional edges not routing, streaming events missing, recursion limit exceeded, and interrupt handling.
How to fix LangChain Python errors — ImportError from package split, Pydantic v2 compatibility, AgentExecutor deprecated, ConversationBufferMemory removed, LCEL output type mismatches, and tool calling failures.