[Nut-upsuser] URL upsstats.cgi DOES not show UPS

[S K]

Hey the NUT sever (http://192.168.0.29/) was working fine and the URL http://192.168.0.29/cgi-bin/nut/upsstats.cgi did show me all the UPS slaves - but all of a sudden one particular slave is not showing up.....The one that is not showing up IP is 192.168.0.20 and the following command in NUT server
upsc upshpomv at 192.168.0.20

Does respond with 
Init SSL without certificate databasebattery.charge: 100battery.charge.low: 10battery.charge.warning: 20battery.mfr.date: CPSbattery.runtime: 3270battery.runtime.low: 300battery.type: PbAcidbattery.voltage: 24.0battery.voltage.nominal: 24device.mfr: CPSdevice.model: CP1350PFCLCDdevice.serial: 000000000000device.type: upsdriver.name: usbhid-upsdriver.parameter.pollfreq: 30driver.parameter.pollinterval: 15driver.parameter.port: autodriver.parameter.synchronous: nodriver.version: 2.7.4driver.version.data: CyberPower HID 0.4driver.version.internal: 0.41input.transfer.high: 139input.transfer.low: 88input.voltage: 117.0input.voltage.nominal: 120output.voltage: 141.0ups.beeper.status: enabledups.delay.shutdown: 20ups.delay.start: 30ups.load: 12ups.mfr: CPSups.model: CP1350PFCLCDups.productid: 0501ups.realpower.nominal: 810ups.serial: 000000000000ups.status: OLups.test.result: No test initiatedups.timer.shutdown: -60ups.timer.start: -60ups.vendorid: 0764

Hence I know the slave does respond to server but why is it now showing in the http://192.168.0.29/cgi-bin/nut/upsstats.cgi  - BTW I have not made ANY changes to hosts.conf in my server. Any idea how to troubleshoot?
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