NPE in BlockBlobClient.exists

[ohadbitt]

Which service(blob, file, queue, table) does this issue concern?

blob

Which version of the SDK was used?

com.azure:azure-storage-blob:12.18.0
(bom 1.2.4)

What problem was encountered?

NPE in BlockBlobClient.exists

Have you found a mitigation/solution?

Kind of - i actually go to this from getBlobOutputStream, so passing overwrite=true fixed the issue for me

Caused by: java.lang.NullPointerException
at com.azure.storage.blob.specialized.BlobClientBase.exists(BlobClientBase.java:405)
at com.azure.storage.blob.specialized.BlockBlobClient.getBlobOutputStream(BlockBlobClient.java:148)
at com.azure.storage.blob.specialized.BlockBlobClient.getBlobOutputStream(BlockBlobClient.java:132)
... 70 more

From debugging
existsWithResponse(null, Context.NONE) -> returns null
Then call to existsWithResponse(null, Context.NONE).getValue() -> is NPE
The blob shouldnt exist at that point btw