I've tried reproducing this a couple of times (there's event a xenial->bionic upgrade bundle in percona-cluster now), but it doesn't seem to fail.
Is there any additional information you can provide as to what might have triggered the error?
I've tried reproducing this a couple of times (there's event a xenial->bionic upgrade bundle in percona-cluster now), but it doesn't seem to fail.
Is there any additional information you can provide as to what might have triggered the error?