[dnceng-bot] Branch aspire/release/8.0-preview6 can't be mirrored to Azdo fast forward branch

[dotnet-maestro-bot]

Branch release/8.0-preview6 in dotnet/aspire repo can't be mirrored from GitHub to Azure DevOps release/8.0-preview6 via fast forward.
There was unexpected error during the mirroring process.

Object reference not set to an instance of an object.

Problem need to be resolved to unblock the code flow.

You can troubleshoot the issue by:

• checking the logs of the mirroring process in the mirroring pipeline.
• by trying to mirror the branch manually
• you can disable the mirroring of the branch in the configuration file.
• you can ask @dotnet/dnceng for help or read the documentation.

Please close this issue once the problem is resolved.

[radical]

@wtgodbe @joperezr what do we need to stop these?

[wtgodbe]

I just deleted a bunch of stale preview branches - I think this got filed because I did that deletion halfway through a run of the mirror pipeline. Closing for now - if these keep popping up I'll investigate further