Confluence unable to restore from builtin backup

[Fábio Cabrita]

Hello,

I am trying to restore all my data from a backup that I have made from Confluence builtin tool but I am allways getting this error, and seems like after day 6 of this month after another restore that I have done, my backups seems compromised.

This is the error that I am getting:

Help! ='(

[Fábio Cabrita]

After trying other backups after day 6 I discover another backup in good conditions, from day 14, and I was able to recover, but still I cannot relay on this system, there was no changes in Confluence setup in those days where I was unable to recovery.

So, do you know what can be doing this?