The error is: ERROR [Weixin] send_document failed to=o9cq803o: [Errno 21] Is a directory: '/' Note the empty () in "Failed to send media ()" — the media path being passed is empty or resolves to "/", causing an EISDIR (Is a directory) OS error. 3. Observe gateway logs — the error appears immediately after Sending response 10:34:56,531 ERROR [Weixin] send_document failed to=o9cq803o: [Errno 21] Is a directory: '/' 10:34:56,532 WARN [Weixin] Failed to send media (): [Errno 21] Is a directory: '/' The user sees the text message fine (the text delivery succeeds before this error). The error is logged but doesn't block the conversation.

TL;DR

The issue can be fixed by ensuring that the media path is validated before calling send_document to prevent empty or root-directory paths from being passed.

Guidance

• Review the media delivery loop in gateway/platforms/base.py to verify that the media_path is correctly populated and validated before calling send_document.
• Check the _deliver_media_from_response function in gateway/run.py to ensure that it correctly handles responses without MEDIA: tags or local file paths and does not add empty paths to the media list.
• Consider adding a conditional check before calling send_document to skip the call if the media_path is empty or resolves to the root directory.
• Investigate why the _non_image_media list is being populated with an empty path when the response text contains no media attachments.

Example

if media_path and media_path != '/':
    send_document(file_path=media_path)

Notes

The issue seems to be related to the logic bug in the media delivery pipeline, and fixing it will require careful review of the code paths involved. The provided example is a simple conditional check, but the actual fix may require more complex changes.

Recommendation

Apply a workaround by adding a conditional check before calling send_document to prevent empty or root-directory paths from being passed, as this will immediately address the log pollution issue and prevent unnecessary send_document calls.