Unable to export data from my Google Cloude SQL database instance

I've been getting this for a few days. 

Failed to back up to gs://{bucket}/{filename}.gz: An unknown problem occurred (ERROR_RDBMS)

The data bucket I'm usin gand filename are valid.

That's all the detail google is giving me. I see some other posts with this issue but someone (I assume from google) always says he will help them and notify them offline.

I've tried restarting the database instance.

thanks,

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