Pool Watcher Discovery Script is failing.
This can happen for a few reasons:
The watcher node doesn't have the appropriate permissions
Watcher Node Configurations are not valid.
Make sure read permission for watcher node configuration is given.
Make sure watchernode.msi has been installed properly.
Make sure credential of test users have been set properly if LiveId and IWA authentication types are selected.
Run test-cswatchernodeconfiguration cmdlet to see errors in watcher node configuration.