asyncio error: Task attached to a different loop when sending voice bubbles Token expiration: ret=-2 errmsg=unknown error indicates session timeout Error Logs 2026-04-21 08:31:30 ERROR: [Weixin] send failed: Task attached to a different loop 2026-04-21 08:31:25 ERROR: [Weixin] send failed: iLink ilink/bot/sendmessage error: ret=-2 errmsg=unknown error Sending fails with asyncio error or token expiration

TL;DR

The most likely fix involves addressing the asyncio error by ensuring tasks are attached to the correct event loop, potentially by using asyncio.run() or loop.create_task().

Guidance

• Verify that the _api_post function in weixin.py is properly handling asynchronous tasks and ensure it's using the correct event loop.
• Check the usage of ClientTimeout in weixin.py:2133 to ensure it's being used within a task context to avoid conflicts with asyncio.
• Investigate the gateway instability and frequent restarts causing cron jobs to miss scheduled times, as this might be contributing to the token expiration issues.
• Consider implementing a retry mechanism for sending voice messages to handle temporary failures due to token expiration or gateway instability.

Example

import asyncio

# Ensure tasks are attached to the correct event loop
loop = asyncio.get_event_loop()
loop.create_task(_api_post())

Notes

The provided information suggests that there are multiple issues at play, including asyncio errors, token expiration, and gateway instability. Addressing these issues may require a combination of code changes and infrastructure adjustments.

Recommendation

Apply a workaround by implementing a retry mechanism for sending voice messages and ensuring tasks are attached to the correct event loop, as this can help mitigate the immediate issues while a more permanent fix is developed.