Studio automation fails on Run with ‘Failed to start execution (500)’. The identical crew runs fine locally with gpt-4o-mini. LLM connection (OpenAI) is valid, $5 credit, no agent warnings. Traces stay on ‘waiting for events’ — execution never starts. Free plan. What’s causing the 500?
For anyone hitting this — worth checking whether the failure is deterministic across reruns or intermittent; capturing the exact traceback + the crew/agent config that triggered it makes it far easier for others here to reproduce and help.