Google App Engine - Error vacuuming indexes

I had an index that had status error, so followi开发者_Python百科ng the docs I tried to vacuum my indexes to remove it. When running appcfg.py to vacuum it I got this error message:

Error 400: --- begin server output --- Deleting a composite index failed: ApplicationError: 1 --- end server output ---

Now all of my indexes are in error state. How can I fix this?

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Must just have been a temporary issue, I retried the exact same command today and it worked.