I have a number of sites running 11.7.1 free, each backing up a single database locally and to Backblaze B2.
Two nights ago every site started failing with errors backing up to B2. All sites are using the same bucket. Other software is using the bucket with no issues.
I’ve checked for updates, and some of the sites have also rebooted, with no change to the backup.
I’ve uploaded an advanced log from one site to https://gist.github.com/mattdwen/37079ee7c53c02ed5110e0747f87e144