This is typically because the add-on is installed without SA-Hydra and SA-VMNetAppUtils.
This is a valid configuration if you install on you're indexer in a distributed environment. To fix it on the indexer (do not do this on DCN's SH's or anything other than indexers, assuming they're reporting the warning):
Delete the .spec files in the README directory, delete the inputs in default and delete all the sample files and restart Splunk on the indexer. If you are using clustering this should be done on the cluster master.
If this is a DCN, or your Search Head, then make sure you copy the SA-Hydra and SA-VMNetAppUtils's along with the TA.
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