fix GetBucketCORS if CORS does not exist in store #8281
Merged
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This PR would fix the case when the usr restore the state created with the legacy S3 provider (everything would be stored in moto). The assumption was that moto would raise an exception if the CORS configuration didn't exist. However, while restoring an older state, the data would exist in moto but not in our store, thus creating a value error when trying to access the
CORSRules
(NoneType
etc etc).This will properly raise the 404 exception if the state is not properly restored.