DVR Keeps shutting off

It seem lately that whenever I open the Channels App on my ATV, I have lost my DVR settings/connection. Yesterday evening,and again this afternoon I have had to login to my Mac mini and connect to the DVR in Safari. Once I do this, DVR functionality returns to the ATV.
Here are the logs from last night thru about 5 minutes ago:

2017/07/28 23:04:55 [TNR] Closed connection to 1325C301 for ch114
2017/07/28 23:38:56 [SYS] Starting Channels DVR v2017.07.28.2151 (darwin-x86_64) in /Users/markmcpadden/channels-dvr/data
2017/07/28 23:38:57 [HDR] Found 2 devices
2017/07/28 23:38:59 [SYS] Started HTTP Server
2017/07/28 23:39:29 [DVR] Recording engine started in /Volumes/LaCie/DVR
2017/07/28 23:39:29 [DVR] Deleting expired job 1501297170-12 NewsChannel 5 at 11
2017/07/28 23:39:30 [NAT] Failed to discover upnp: UPnP port discovery failed.
2017/07/28 23:39:30 [NAT] Failed to discover router using natpmp and upnp.
2017/07/28 23:39:30 [DVR] Waiting 56m59.960470473s until next job 1501302990-18 Nightline
2017/07/28 23:39:30 [DVR] Processing file-528: TV/NewsChannel 5 at 11/NewsChannel 5 at 11 1999-09-13 2017-07-28-2259.mpg
2017/07/28 23:39:34 [SYS] Bonjour service registered with Marks-Mac-mini
2017/07/28 23:39:35 [DVR] Running commercial detection on file 528 (TV/NewsChannel 5 at 11/NewsChannel 5 at 11 1999-09-13 2017-07-28-2259.mpg)
2017/07/28 23:39:39 [IDX] Pruned 77 expired airings from USA-FL68759-DEFAULT in 407.295141ms.
2017/07/28 23:39:40 [IDX] Pruned 155 expired airings from USA-OTA33417 in 725.781775ms.
2017/07/28 23:42:56 [DVR] Commercial detection finished with 8 markers.
2017/07/28 23:42:56 [SYS] Created database snapshot: backup-20170728.234256
2017/07/28 23:42:56 [SYS] Removing old backup backup-20170705.234145
2017/07/29 00:04:03 [DVR] Deleting /Volumes/LaCie/DVR/TV/NewsChannel 5 at 11/NewsChannel 5 at 11 1999-09-13 2017-07-28-2259.mpg
2017/07/29 00:36:30 [DVR] Starting job 1501302990-18 Nightline on ch=[116 25.1]
2017/07/29 00:36:30 [DVR] Waiting 22h22m59.671168261s until next job 1501383570-12 NewsChannel 5 at 11
2017/07/29 00:36:30 [TNR] Opened connection to 1325C301 for ch116
2017/07/29 00:36:30 [DVR] Recording for job 1501302990-18 from 1325C301 ch116 into “TV/Nightline/Nightline 2017-07-28 2017-07-29-0036.mpg” for 30m59.671069361s
2017/07/29 01:07:30 [TNR] Closed connection to 1325C301 for ch116
2017/07/29 01:07:30 [DVR] Finished job 1501302990-18 Nightline
2017/07/29 01:07:30 [DVR] Waiting 21h51m59.414670643s until next job 1501383570-12 NewsChannel 5 at 11
2017/07/29 01:07:30 [DVR] Processing file-529: TV/Nightline/Nightline 2017-07-28 2017-07-29-0036.mpg
2017/07/29 01:07:31 [DVR] Running commercial detection on file 529 (TV/Nightline/Nightline 2017-07-28 2017-07-29-0036.mpg)
2017/07/29 01:11:37 [DVR] Commercial detection finished with 12 markers.
2017/07/29 17:26:37 [SYS] Starting Channels DVR v2017.07.28.2151 (darwin-x86_64) in /Users/markmcpadden/channels-dvr/data
2017/07/29 17:26:39 [HDR] Found 2 devices
2017/07/29 17:26:40 [SYS] Started HTTP Server
2017/07/29 17:27:13 [DVR] Recording engine started in /Volumes/LaCie/DVR
2017/07/29 17:27:13 [DVR] Waiting 5h32m16.368494033s until next job 1501383570-12 NewsChannel 5 at 11
2017/07/29 17:27:13 [SYS] Downloading new version v2017.07.29.2103
2017/07/29 17:27:14 [NAT] Failed to discover upnp: UPnP port discovery failed.
2017/07/29 17:27:14 [NAT] Failed to discover router using natpmp and upnp.
2017/07/29 17:27:14 [SYS] Created database snapshot: backup-20170729.172714
2017/07/29 17:27:14 [SYS] Removing old backup backup-20170706.234146
2017/07/29 17:27:15 [SYS] Bonjour service registered with Marks-Mac-mini
2017/07/29 17:27:25 [IDX] Pruned 734 expired airings from USA-OTA33417 in 1.877312598s.
2017/07/29 17:27:26 [IDX] Pruned 355 expired airings from USA-FL68759-DEFAULT in 1.196201492s.
2017/07/29 17:27:40 [SYS] Update downloaded and verified successfully.
2017/07/29 17:27:40 [SYS] Shutting down for upgrade from v2017.07.28.2151 to v2017.07.29.2103
2017/07/29 17:27:40 [SYS] Bonjour service stopped.
2017/07/29 17:27:41 [DVR] Recording engine stopped.
2017/07/29 17:27:43 [SYS] Starting Channels DVR v2017.07.29.2103 (darwin-x86_64) in /Users/markmcpadden/channels-dvr/data
2017/07/29 17:27:44 [HDR] Found 2 devices
2017/07/29 17:27:46 [SYS] Started HTTP Server
2017/07/29 17:27:50 [DVR] Recording engine started in /Volumes/LaCie/DVR
2017/07/29 17:27:50 [SYS] Removing old update 2017.07.20.1616
2017/07/29 17:27:50 [DVR] Waiting 5h31m39.811764134s until next job 1501383570-12 NewsChannel 5 at 11
2017/07/29 17:27:50 [SYS] Created database snapshot: backup-20170729.172750
2017/07/29 17:27:50 [SYS] Removing old backup backup-20170707.234147
2017/07/29 17:27:51 [SYS] Bonjour service registered with Marks-Mac-mini
2017/07/29 17:27:53 [NAT] Failed to discover upnp: write udp4 0.0.0.0:65379->239.255.255.250:1900: i/o timeout
2017/07/29 17:27:53 [NAT] Failed to discover router using natpmp and upnp.
2017/07/29 17:28:00 [IDX] Pruned 0 expired airings from USA-FL68759-DEFAULT in 1.260561ms.
2017/07/29 17:28:00 [IDX] Pruned 0 expired airings from USA-OTA33417 in 605.341µs.

Is your Mac mini set to never sleep in Energy Saver preferences?

“Prevent computer from sleeping automatically when display is off” is checked.