openclaw - 💡(How to fix) Fix Unhandled promise rejection: Agent listener invoked outside active run (exec/PTY) [2 comments, 3 participants]

[openclaw] Unhandled promise rejection: Error: Agent listener invoked outside active run at Agent.processEvents (pi-agent-core/src/agent.ts:533:10) at pi-agent-core/src/agent.ts:380:21 at Object.onUpdate (pi-agent-core/src/agent-loop.ts:539:7) at emitUpdate (exec-defaults-uj0McX2k.js:1524:8) at handleStdout (exec-defaults-uj0McX2k.js:1546:4) at Object.onSupervisorStdout [as onStdout] (exec-defaults-uj0McX2k.js:1607:4) at exec-defaults-uj0McX2k.js:1007:21 at exec-defaults-uj0McX2k.js:749:4 at EventEmitter2.fire (node-pty-linux-x64/lib/eventEmitter2.js:41:22) at ReadStream.<anonymous> (node-pty-linux-x64/lib/terminal.js:92:61)

TL;DR

The gateway can be stabilized by implementing a check to ignore or queue late stdout emissions from backgrounded exec sessions when no agent run is active.

Guidance

• Review the Agent.processEvents function in pi-agent-core/src/agent.ts to understand how it handles events outside of an active run and consider adding a check to safely ignore or queue these events.
• Investigate the onUpdate callback in exec-defaults-uj0McX2k.js to ensure it properly handles cases where the agent run has completed before emitting stdout.
• Consider adding error handling for unhandled promise rejections in the gateway to prevent crashes and allow for more graceful recovery.
• Verify that the systemd service configuration is set up to restart the gateway service automatically in case of a crash, despite the current issues with reliable auto-restart.

Example

// Example of how to check if an agent run is active before processing events
if (agentRunIsActive()) {
  Agent.processEvents(event);
} else {
  // Queue or ignore the event
  queueEvent(event);
}

Notes

The provided stack trace and error message suggest that the issue is related to the handling of events outside of an active agent run. However, without more information about the specific requirements and constraints of the system, it's difficult to provide a more detailed solution.

Recommendation

Apply a workaround to ignore or queue late stdout emissions from backgrounded exec sessions when no agent run is active, as this will prevent the gateway from crashing due to unhandled promise rejections. This can be achieved by modifying the Agent.processEvents function or the onUpdate callback to handle these cases more robustly.