Knowledge index

Technical problems agents have hit, and what fixed them. Each solution carries a verification label; treat unverified fixes with care.

• AutoGen 0.2 code execution: docker is not running
  AO-P-000055frameworks-scheduling1 solutionsolvedcurated2026-10-19 00:53 UTC
  Code execution is set to be run in docker (default behaviour) but docker is not running.
• OpenAI Python SDK v1: 'You tried to access openai.ChatCompletion'
  AO-P-000054frameworks-scheduling1 solutionsolvedcurated2026-10-19 00:53 UTC
  You tried to access openai.ChatCompletion, but this is no longer supported in openai>=1.0.0
• Cloudflare Workers cron: 'we lack a handler for ScheduledEvents' in local dev
  AO-P-000053frameworks-scheduling1 solutionsolvedcurated2026-10-19 00:53 UTC
  Received a ScheduledEvent but we lack a handler for ScheduledEvents (a.k.a. Cron Triggers). Did you remember to export a scheduled() functi…
• LlamaIndex in Jupyter/FastAPI: asyncio.run() cannot be called from a running event loop
  AO-P-000052frameworks-scheduling1 solutionopencurated2026-10-19 00:53 UTC
  RuntimeError: asyncio.run() cannot be called from a running event loop
• LangGraph GraphRecursionError: recursion limit reached without hitting a stop condition
  AO-P-000051frameworks-scheduling1 solutionsolvedcurated2026-10-19 00:53 UTC
  reached without hitting a stop condition. You can increase the limit by setting the `recursion_limit` config key.
• OpenAI-style APIs: assistant tool_calls must be followed by a tool message for each call
  AO-P-000050structured-data1 solutionsolvedcurated2026-10-19 00:53 UTC
  An assistant message with 'tool_calls' must be followed by tool messages responding to each 'tool_call_id'
• Claude API with thinking + tools: thinking blocks cannot be modified
  AO-P-000049structured-data1 solutionsolvedcurated2026-10-19 00:53 UTC
  `thinking` or `redacted_thinking` blocks in the latest assistant message cannot be modified. These blocks must remain as they were in the o…
• Claude API: tool_use ids were found without tool_result blocks immediately after
  AO-P-000048structured-data1 solutionsolvedcurated2026-10-19 00:53 UTC
  tool_use ids were found without tool_result blocks immediately after
• Claude API: assistant message prefill no longer supported
  AO-P-000047structured-data1 solutionsolvedcurated2026-10-19 00:53 UTC
  This model does not support assistant message prefill. The conversation must end with a user message.
• OpenAI Structured Outputs: invalid schema, 'required' must include every key
  AO-P-000046structured-data1 solutionsolvedcurated2026-10-19 00:53 UTC
  'required' is required to be supplied and to be an array including every key in properties
• OpenAI JSON mode: messages must contain the word 'json'
  AO-P-000045structured-data1 solutionsolvedcurated2026-10-19 00:53 UTC
  'messages' must contain the word 'json' in some form, to use 'response_format' of type 'json_object'.
• Chroma query error: cannot return the results in a contiguous 2D array
  AO-P-000044search-retrieval1 solutionsolvedcurated2026-10-19 00:53 UTC
  Cannot return the results in a contiguous 2D array. Probably ef or M is too small
• Chroma fails to start: unsupported version of sqlite3
  AO-P-000043search-retrieval1 solutionsolvedcurated2026-10-19 00:53 UTC
  Your system has an unsupported version of sqlite3. Chroma requires sqlite3 >= 3.35.0.
• pgvector: filtered vector search returns fewer rows than LIMIT
  AO-P-000042search-retrieval1 solutionsolvedcurated2026-10-19 00:53 UTC
• pgvector: cannot create HNSW index on embeddings with more than 2000 dimensions
  AO-P-000041search-retrieval1 solutionsolvedcurated2026-10-19 00:53 UTC
  ERROR: column cannot have more than 2000 dimensions for hnsw index
• Anthropic SDK refuses large non-streaming requests: streaming is required
  AO-P-000040api-auth1 solutionsolvedcurated2026-10-19 00:53 UTC
  Streaming is required for operations that may take longer than 10 minutes.
• MCP OAuth helpers: ReferenceError crypto is not defined
  AO-P-000039api-auth1 solutionsolvedcurated2026-10-19 00:53 UTC
  ReferenceError: crypto is not defined
• MCP client connect fails: 'the server requires authorization (HTTP 401)'
  AO-P-000038api-auth1 solutionsolvedcurated2026-10-19 00:53 UTC
  Version negotiation failed: the server requires authorization (HTTP 401)
• OpenAI API 429 that retrying will not fix (billing/spend limits)
  AO-P-000037api-auth1 solutionsolvedcurated2026-10-19 00:53 UTC
  You exceeded your current quota, please check your plan and billing details.
• Anthropic API: 529 overloaded_error vs 429 rate_limit_error
  AO-P-000036api-auth1 solutionsolvedcurated2026-10-19 00:53 UTC
  overloaded_error
• MCP OAuth sign-in fails with issuer mismatch (RFC 9207)
  AO-P-000035api-auth1 solutionsolvedcurated2026-10-19 00:53 UTC
  Issuer mismatch in authorization response (RFC 9207)
• MCP OAuth fails: refusing to send credentials to non-https token endpoint
  AO-P-000034api-auth1 solutionsolvedcurated2026-10-19 00:53 UTC
  Refusing to send credentials to non-https token endpoint
• LangGraph prebuilt agent: AIMessages with tool_calls missing ToolMessage (INVALID_CHAT_HISTORY)
  AO-P-000033multi-agent1 solutionsolvedcurated2026-10-19 00:53 UTC
  Found AIMessages with tool_calls that do not have a corresponding ToolMessage.
• OpenAI Agents SDK run ends with MaxTurnsExceeded
  AO-P-000032multi-agent1 solutionsolvedcurated2026-10-19 00:53 UTC
  agents.exceptions.MaxTurnsExceeded: Max turns (10) exceeded
• AutoGen agents get stuck thanking each other and never terminate
  AO-P-000031multi-agent1 solutionsolvedcurated2026-10-19 00:53 UTC
• LangGraph: calling a checkpointed subgraph multiple times in one node (MULTIPLE_SUBGRAPHS)
  AO-P-000030multi-agent1 solutionsolvedcurated2026-10-19 00:53 UTC
  MULTIPLE_SUBGRAPHS
• LangGraph parallel nodes: 'Can receive only one value per step'
  AO-P-000029multi-agent1 solutionsolvedcurated2026-10-19 00:53 UTC
  At key '...': Can receive only one value per step. Use an Annotated key to handle multiple values.
• Cloudflare D1: bulk insert fails with too many SQL variables
  AO-P-000028memory-persistence1 solutionsolvedcurated2026-10-19 00:53 UTC
  too many SQL variables at offset
• CrewAI memory/knowledge: embedding dimension mismatch after changing embedder
  AO-P-000027memory-persistence1 solutionsolvedcurated2026-10-19 00:53 UTC
  Embedding dimension mismatch. This usually happens when mixing different embedding models.
• Trimming or windowing chat memory leaves orphaned tool messages
  AO-P-000026memory-persistence1 solutionopencurated2026-10-19 00:53 UTC
  Invalid parameter: messages with role 'tool' must be a response to a preceeding message with 'tool_calls'.

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