Fix LangChain OutputParserException: List for a String Field

Why switching to a larger model surfaces a list-for-string ValidationError in LangChain's PydanticOutputParser, and the two fixes that actually hold.

Fix LangChain's 'authorizedCollections is not supported' on Firestore

The toolkit crashes at get_tools() because Firestore rejects the authorizedCollections option. Here is the local patch while PR langchain-mongodb#363 stays open.

Claude Code "advisor tool is unavailable" with Fable 5: workaround

The Fable 5 advisor fails on the first call in every session. Here is why it happens and the only workaround in v2.1.198.

Fix UiPath Get Orchestrator Asset Error 1101: A Folder Is Required

Get Orchestrator Asset fails with error 1101 after the Studio 2025.10.12 upgrade because the Orch Folder Path field silently loses its value; refresh the connection to clear it.

Fix Claude Code 'Tool Call Could Not Be Parsed' (Retry Also Failed)

The partial-JSON parser chokes on CJK characters in tool-call arguments. Start a new session in English and keep tool-call args in ASCII.

n8n AI Agent Nodes Break After Google's Gemini Interactions API Migration: How to Fix It

Why n8n's Gemini and LangChain AI Agent nodes stopped returning usable responses, and the Code-node workaround while the official fix is still pending.

Fix n8n Chat UI output_text Error on Message Two

Fix the n8n Chat UI error that appears on the second message with a self-hosted LLM.

How to fix n8n HTTP Request Bearer auth 401 with pagination

n8n's HTTP Request node silently swaps a working Bearer token for the literal string "hidden" once pagination is enabled, causing every paginated request to fail with 401. Here's the exact workaround.

How to Fix Zapier's Discord Integration 2.0 Endless Reconnect Loop

Zapier's Discord integration 2.0 traps some accounts in a reconnect loop that the standard Reconnect button can't break. Here's the delete-and-recreate fix, the three-dots-menu alternative, and how to tell it apart from a separate permissions error.

How to Fix n8n AI Agent Tool Calls Not Saved in the Memory Node

n8n's AI Agent never writes the tool_calls array to Memory, so the model imitates a fake history and stops calling tools. Here are the two fixes that work today.