Issue with Media Url's using numbers not letters

[afinn-tech]

Hi
Since moving to v3.01 , we are getting error that files dont exist in Blob and they dont . ( used to be flagged as information level not sure why they are now errors )

But it has very strange ref : /media/1234/umbraco5.png
all of media have /media/trertre/umbraco5.png ( Letters not numbers)
This only happens in Prod . I trying turning of the Virtual Path , but the errors remain .
Any suggestions ?

This is the error in the log
at Azure.Storage.Blobs.BlobRestClient.GetProperties(String snapshot, String versionId, Nullable1 timeout, String leaseId, String encryptionKey, String encryptionKeySha256, Nullable1 encryptionAlgorithm, Nullable1 ifModifiedSince, Nullable1 ifUnmodifiedSince, String ifMatch, String ifNoneMatch, String ifTags, CancellationToken cancellationToken)
at Azure.Storage.Blobs.Specialized.BlobBaseClient.<GetPropertiesInternal>d__110.MoveNext()

Andy