Backup to Nabu Casa fails

[faint ivy]

My backups to Nabu Casa are consistently failing. It was initially succeeding every few days, but has now been unsuccessful for 3 weeks.

I've enabled debug logging. On first attempt, it gives the error message "Failed to fetch: [Errno None] Can not write request body", all retries after that give "Failed to fetch: [Errno 1] [SSL: SSLV3_ALERT_BAD_RECORD_MAC] ssl/tls alert bad record mac (_ssl.c:2638)".

I commented on this issue with logs: https://github.com/home-assistant/core/issues/136503#issuecomment-2690827825

I'm a technical user, but not sure how to get further information to help diagnose the problem.

[honest kayak]

Same issue for me too with identical log. I have haos running on a proxmox vm. Backups to vm and to my separate unraid nas work fine. Just not to nabu. I thought it could be related to a setting in proxmox that I'd missed. Also disabled pihole completely and even set my dns to auto on my router with no change to the end result. If I get a solution I'll post here

[stable dew]

Same isseu, same error. Upload failed for cloud.cloud: Failed to upload backup Failed to fetch: [Errno 1] [SSL: SSLV3_ALERT_BAD_RECORD_MAC] ssl/tls alert bad record mac (_ssl.c:2648)

after running succesfully for multiple weeks now 5 days with errors. Reboot and update to the latest version did not resolve the issue.

[distant valley]

I had a similar issue, reducing the backup size (by not backing up sensor history) fixed it for me… 🤞

https://discord.com/channels/330944238910963714/1338257419322789908