Web interface showing zero queries

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8 
[2018-04-08 03:09:11.604]  -> Total DNS queries: 0
[2018-04-08 03:09:11.604]  -> Cached DNS queries: 0
[2018-04-08 03:09:11.604]  -> Forwarded DNS queries: 0
[2018-04-08 03:09:11.604]  -> Exactly blocked DNS queries: 0
[2018-04-08 03:09:11.604]  -> Wildcard blocked DNS queries: 0
[2018-04-08 03:09:11.605]  -> Unknown DNS queries: 0
[2018-04-08 03:09:11.605]  -> Unique domains: 0
[2018-04-08 03:09:11.605]  -> Unique clients: 0
[2018-04-08 03:09:11.605]  -> Known forward destinations: 0

You don't seem to have any clients connected to Pi-hole.