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Troubleshoot the Agent SDKagent-sdk/troubleshooting

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# Troubleshoot the Agent SDK
### CLIConnectionError: Failed to start Claude Code
### CLIConnectionError: Not connected
## CLI process exit
### ProcessError: Command failed with exit code
### Claude Code process exited with code N
### Claude Code returned an error result
# Troubleshooting
## CLI startup
### CLINotFoundError: Claude Code not found
### CLIConnectionError: Refusing to execute batch script
## Structured outputs