How to stop DVR server from disabling itself panic: runtime error:

Channels DVR Server Troubleshooting
#21

And now the website is down again. This is frustrating!

#22

Please find the log file at /mnt/HD/HD_a2/Nas_Prog/ChannelsDVR/channels-dvr/data/channels-dvr.log on your NAS and email it to [email protected]

#23

Here's everything recorded today:

2026/03/22 02:29:08.119341 [SYS] Detected time jump of -22.808025913s
2026/03/22 05:05:29.229152 [HC] Removed 198 entries for 18.9M from /shares/Volume_1/channels-data/Images/tmsimg to keep under cache limit of 1G (oldest deleted: 2025-03-02T22:21:30-06:00, newest deleted: 2025-03-03T13:37:11-06:00)
2026/03/22 08:06:49.852866 [SYS] Starting Channels DVR v2026.02.09.1530 (linux-armv7l pid:12956) in /mnt/HD/HD_a2/Nas_Prog/ChannelsDVR/channels-dvr/data
2026/03/22 08:06:49.955884 [SYS] Started HTTP Server on 8089
2026/03/22 08:07:02.070829 [DVR] No listings for X-M3U (41856 airings, 0 groups); starting indexer..
2026/03/22 08:07:15.715300 [DVR] Recording engine started in /shares/Volume_1/channels-data
2026/03/22 08:07:16.163468 [SYS] Bonjour service running for dvr-mycloudex2ultra.local. [192.168.0.112]
2026/03/22 08:08:08.393524 [ERR] No stations available in lineup X-M3U during guide data download
2026/03/22 08:14:25.312184 [DVR] Indexed 128 channels (43008 airings + 1920 replaced) with placeholders [6m17s index]
2026/03/22 08:14:43.764451 [IDX] Pruned 0 expired groups from X-M3U in 581µs.
2026/03/22 08:17:03.050880 [SYS] Created database snapshot: backup-20260322.131657
2026/03/22 08:17:03.143300 [SYS] Removing old backup backup-20260220.192701
2026/03/22 09:38:07.310541 [ERR] No stations available in lineup X-M3U during guide data download
2026/03/22 09:42:30.287948 [DVR] Indexed 128 channels (43008 airings + 0 replaced) with placeholders [4m23s index]
2026/03/22 09:42:42.878394 [IDX] Pruned 0 expired groups from X-M3U in 171µs.
2026/03/22 09:42:43.367624 [IDX] Pruned 1152 expired airings from X-M3U in 429ms.
2026/03/22 09:57:37.001696 [DVR] Recording engine stopped.
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x1f9b0ac]

goroutine 61 [running]:
github.com/fancybits/channels-server/dvr.(*Scannable).SetLastError(0x866a100, {0x3c63fb8, 0x53e1d98})
	github.com/fancybits/channels-server/dvr/scannable.go:38 +0x128
github.com/fancybits/channels-server/dvr.(*Recorder).scanPath(0x5d2da48, {0x2cce4ce, 0x2}, {0x6035b26, 0xa}, 0x6605f74)
	github.com/fancybits/channels-server/dvr/scanner.go:284 +0x2cc
github.com/fancybits/channels-server/dvr.(*Recorder).doScan(0x5d2da48)
	github.com/fancybits/channels-server/dvr/scanner.go:245 +0x184
github.com/fancybits/channels-server/dvr.(*Recorder).RunScanner(0x5d2da48)
	github.com/fancybits/channels-server/dvr/scanner.go:115 +0x220
created by github.com/fancybits/channels-server/dvr.(*Recorder).Run in goroutine 1
	github.com/fancybits/channels-server/dvr/recorder.go:248 +0x178
2026/03/22 11:02:37.917046 [SYS] Starting Channels DVR v2026.02.09.1530 (linux-armv7l pid:18351) in /mnt/HD/HD_a2/Nas_Prog/ChannelsDVR/channels-dvr/data
2026/03/22 11:02:38.054590 [SYS] Started HTTP Server on 8089
2026/03/22 11:02:50.670314 [DVR] No listings for X-M3U (41856 airings, 0 groups); starting indexer..
2026/03/22 11:02:50.799570 [ERR] No stations available in lineup X-M3U during guide data download
2026/03/22 11:02:54.050576 [DVR] Recording engine started in /shares/Volume_1
2026/03/22 11:02:54.235293 [SYS] Bonjour service running for dvr-mycloudex2ultra.local. [192.168.0.112]
2026/03/22 11:04:45.900014 [DVR] Recording engine stopped.
2026/03/22 11:04:53.498438 [DVR] Recording engine started in /shares/Volume_1
2026/03/22 11:04:57.941746 [DVR] No listings for X-M3U (42126 airings, 0 groups); starting indexer..
2026/03/22 11:04:58.162922 [ERR] No stations available in lineup X-M3U during guide data download
2026/03/22 11:06:35.280071 [DVR] Indexed 128 channels (43008 airings + 0 replaced) with placeholders [3m44s index]
2026/03/22 11:11:50.181994 [DVR] Indexed 128 channels (43008 airings + 0 replaced) with placeholders [6m52s index]
2026/03/22 11:12:02.675093 [IDX] Pruned 0 expired groups from X-M3U in 205µs.
2026/03/22 11:13:08.723636 [SYS] Created database snapshot: backup-20260322.161259
2026/03/22 13:40:46.701101 [SCN] Imported movie #39559 MUSIC/Big Country - Eclectic - London, Dingwalls - March 21, 1996.mp4
2026/03/22 13:44:36.646448 [SCN] Imported movie #39560 MUSIC/Florence + the Machine - HPLive.mp4
2026/03/22 13:47:58.825784 [SCN] Imported movie #39561 MUSIC/Sum 41 - Introduction to Destruction (Live in London 2001).webm
2026/03/22 13:49:24.368624 [SCN] Imported movie #39562 MUSIC/The Pixies- Barrymore Theater, Madison Wi 12592.mp4
2026/03/22 13:50:38.615596 [SCN] Imported movie #39563 MUSIC/The Police - Synchronicity Concert, Montreal, Canada, August 2nd, 1983.mp4
2026/03/22 15:30:34.515260 [SYS] Downloading new version v2026.03.22.2002
2026/03/22 15:31:56.329958 [SYS] Update downloaded and verified successfully.
2026/03/22 15:33:03.598052 [SYS] Bonjour service stopped.
2026/03/22 15:33:08.107851 [DVR] Recording engine stopped.
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x1f9b0ac]

goroutine 349 [running]:
github.com/fancybits/channels-server/dvr.(*Scannable).SetLastError(0x6473140, {0x3c63fb8, 0x53e1d98})
	github.com/fancybits/channels-server/dvr/scannable.go:38 +0x128
github.com/fancybits/channels-server/dvr.(*Recorder).scanPath(0x81d48c8, {0x2cce4ce, 0x2}, {0x7fc0410, 0xa}, 0x8601f74)
	github.com/fancybits/channels-server/dvr/scanner.go:284 +0x2cc
github.com/fancybits/channels-server/dvr.(*Recorder).doScan(0x81d48c8)
	github.com/fancybits/channels-server/dvr/scanner.go:245 +0x184
github.com/fancybits/channels-server/dvr.(*Recorder).RunScanner(0x81d48c8)
	github.com/fancybits/channels-server/dvr/scanner.go:115 +0x220
created by github.com/fancybits/channels-server/dvr.(*Recorder).Run in goroutine 89
	github.com/fancybits/channels-server/dvr/recorder.go:248 +0x178
2026/03/22 19:31:48.257120 [SYS] Starting Channels DVR v2026.03.22.2002 (linux-armv7l pid:9391) in /mnt/HD/HD_a2/Nas_Prog/ChannelsDVR/channels-dvr/data
2026/03/22 19:31:48.635866 [SYS] Started HTTP Server on 8089
2026/03/22 19:32:03.742860 [DVR] No listings for X-M3U (43008 airings, 0 groups); starting indexer..
2026/03/22 19:32:03.948581 [ERR] No stations available in lineup X-M3U during guide data download
2026/03/22 19:32:57.974902 [DVR] Recording engine started in /shares/Volume_1
2026/03/22 19:32:59.300727 [SYS] Bonjour service running for dvr-mycloudex2ultra.local. [192.168.0.112]
2026/03/22 19:39:41.573052 [DVR] Recording engine stopped.
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x1d86ba0]

goroutine 88 [running]:
github.com/fancybits/channels-server/dvr.(*Scannable).SetLastError(0x103d9340, {0x3b2a620, 0x51dbca0})
	github.com/fancybits/channels-server/dvr/scannable.go:38 +0x128
github.com/fancybits/channels-server/dvr.(*Recorder).scanPath(0x5d5e548, {0x2bad476, 0x6}, {0x1005e400, 0xe}, 0x5871f74)
	github.com/fancybits/channels-server/dvr/scanner.go:284 +0x2cc
github.com/fancybits/channels-server/dvr.(*Recorder).doScan(0x5d5e548)
	github.com/fancybits/channels-server/dvr/scanner.go:238 +0xac
github.com/fancybits/channels-server/dvr.(*Recorder).RunScanner(0x5d5e548)
	github.com/fancybits/channels-server/dvr/scanner.go:115 +0x224
created by github.com/fancybits/channels-server/dvr.(*Recorder).Run in goroutine 1
	github.com/fancybits/channels-server/dvr/recorder.go:248 +0x178
2026/03/22 20:05:10.422471 [SYS] Starting Channels DVR v2026.03.22.2002 (linux-armv7l pid:23217) in /mnt/HD/HD_a2/Nas_Prog/ChannelsDVR/channels-dvr/data
2026/03/22 20:05:10.536228 [SYS] Started HTTP Server on 8089
2026/03/22 20:05:22.561971 [DVR] No listings for X-M3U (43008 airings, 0 groups); starting indexer..
2026/03/22 20:05:22.740818 [ERR] No stations available in lineup X-M3U during guide data download
2026/03/22 20:05:24.827281 [DVR] Recording engine started in /shares/Volume_1
2026/03/22 20:05:25.144130 [SYS] Bonjour service running for dvr-mycloudex2ultra.local. [192.168.0.112]
2026/03/22 20:09:07.490028 [DVR] Indexed 128 channels (43008 airings + 0 replaced) with placeholders [3m45s index]
2026/03/22 20:09:18.378420 [IDX] Pruned 0 expired groups from X-M3U in 161µs.
2026/03/22 20:09:28.989337 [SYS] Created database snapshot: backup-20260323.010925
#24

I also submitted the diagnostic logs through the website.

#25

Please update to the next pre-release if you are able to. It has a fix for that crash.

#26

When you said you submitted the diagnostic log through the website, did it give you an ID back? I don't see that it was submitted.

#27

d1927015-de05-4e84-83f0-a597f4abfaf7

#28

Downloading 2026.03.22.2059 update...

1 Like
#29

Updated now. Fingers crossed.

#30

Please submit diagnostics again.

#31

fe89dfc8-2b31-44a9-ab78-33692a307aa3

#32

Thanks to everyone for your help.

1 Like