Describe the bug
I'm trying to resume a slackdump archive. A couple of months ago, I fully populated it over the course of several days; and have done a resume on it several times since then. But now when I do so, after a few minutes, it shows this error, then seems to freeze a few seconds later:
2025-09-20 23:22:05 ERROR WithRetry
├ error: channel_not_found
├ attempt: 1
└ maxAttempts: 3
Annoyingly, it doesn't say which channel is the problem, so I don't know what exactly happened to cause it.
The reason I am using Slackdump is that we sadly have a 6 month retention policy set, despite having a Business+ plan, and unlimited retention being a primary goal of Slack and a key reason you'd pay for it 🤦
Authentication type
Google SSO, which I did a couple of months ago (2025-07-12)
To Reproduce
- Run
time slackdump resume -refresh -v slackdump_20250712_002557
- Wait a minute or so while some dumping happens
- Observe the error being logged, then after a few seconds, logging stops
Expected behavior
If a channel has been deleted, ignore it, and continuing to dump the rest of the channels.
Output
Here is the debug output from 10 seconds before the error, up until the freeze. Nothing further was logged after the last message for over 20 minutes (I then closed it). I've tried this a few times, and this time it showed a second related error.
2025-09-20 23:32:39 DEBUG channel finalisation
├ is_complete: false
└ channel_id: C01AY470Q8J
2025-09-20 23:32:39 DEBUG not complete, skipping
├ channel_id: C01AY470Q8J
└ is_complete: false
2025-09-20 23:32:39 DEBUG - getting thread
└ slack_link: C01AY470Q8J:1755236724.557099
2025-09-20 23:32:39 INFO stream result: <Thread[C01AY470Q8J:1755240626.331419]>
2025-09-20 23:32:39 DEBUG inserted chunk
├ channel_id: C08CS770PJ8
├ type: ChannelInfo
├ final: false
├ thread_only: false
├ id: 117497
└ len: 1
2025-09-20 23:32:40 DEBUG inserted chunk
├ final: true
├ thread_only: false
├ id: 117498
├ len: 0
├ channel_id: C08CS770PJ8
└ type: Messages
2025-09-20 23:32:40 DEBUG channel finalisation
├ channel_id: C08CS770PJ8
└ is_complete: true
2025-09-20 23:32:40 DEBUG calling channel transform
├ is_complete: true
└ channel_id: C08CS770PJ8
2025-09-20 23:32:40 DEBUG server reported channel done channel_id: C08CS770PJ8
2025-09-20 23:32:40 INFO stream result: <C08CS770PJ8>
2025-09-20 23:32:40 DEBUG inserted chunk
├ thread_only: false
├ id: 117499
├ len: 3
├ channel_id: C01AY470Q8J
├ type: ThreadMessages
└ final: true
2025-09-20 23:32:41 DEBUG channel finalisation
├ channel_id: C01AY470Q8J
└ is_complete: false
2025-09-20 23:32:41 DEBUG not complete, skipping
├ channel_id: C01AY470Q8J
└ is_complete: false
2025-09-20 23:32:41 DEBUG - getting thread
└ slack_link: C01AY470Q8J:1755214660.201309
2025-09-20 23:32:41 INFO stream result: <Thread[C01AY470Q8J:1755236724.557099]>
2025-09-20 23:32:41 DEBUG inserted chunk
├ thread_only: false
├ id: 117500
├ len: 3
├ channel_id: C07R06A4BPH
├ type: ChannelUsers
└ final: false
2025-09-20 23:32:41 DEBUG inserted chunk
├ final: false
├ thread_only: false
├ id: 117501
├ len: 1
├ channel_id: C07R06A4BPH
└ type: ChannelInfo
2025-09-20 23:32:41 DEBUG inserted chunk
├ id: 117502
├ len: 0
├ channel_id: C07R06A4BPH
├ type: Messages
├ final: true
└ thread_only: false
2025-09-20 23:32:42 DEBUG channel finalisation
├ channel_id: C07R06A4BPH
└ is_complete: true
2025-09-20 23:32:42 DEBUG calling channel transform
├ channel_id: C07R06A4BPH
└ is_complete: true
2025-09-20 23:32:42 DEBUG server reported channel done channel_id: C07R06A4BPH
2025-09-20 23:32:42 INFO stream result: <C07R06A4BPH>
2025-09-20 23:32:42 DEBUG inserted chunk
├ channel_id: C01AY470Q8J
├ type: ThreadMessages
├ final: true
├ thread_only: false
├ id: 117503
└ len: 5
2025-09-20 23:32:43 DEBUG channel finalisation
├ channel_id: C01AY470Q8J
└ is_complete: false
2025-09-20 23:32:43 DEBUG not complete, skipping
├ channel_id: C01AY470Q8J
└ is_complete: false
2025-09-20 23:32:43 DEBUG - getting thread
└ slack_link: C01AY470Q8J:1755073396.902159
2025-09-20 23:32:43 INFO stream result: <Thread[C01AY470Q8J:1755214660.201309]>
2025-09-20 23:32:43 DEBUG inserted chunk
├ final: false
├ thread_only: false
├ id: 117504
├ len: 7
├ channel_id: C08BDF0JJB1
└ type: ChannelUsers
2025-09-20 23:32:43 DEBUG inserted chunk
├ id: 117505
├ len: 1
├ channel_id: C08BDF0JJB1
├ type: ChannelInfo
├ final: false
└ thread_only: false
2025-09-20 23:32:43 DEBUG inserted chunk
├ type: Messages
├ final: true
├ thread_only: false
├ id: 117506
├ len: 0
└ channel_id: C08BDF0JJB1
2025-09-20 23:32:44 DEBUG channel finalisation
├ channel_id: C08BDF0JJB1
└ is_complete: true
2025-09-20 23:32:44 DEBUG calling channel transform
├ is_complete: true
└ channel_id: C08BDF0JJB1
2025-09-20 23:32:44 DEBUG server reported channel done channel_id: C08BDF0JJB1
2025-09-20 23:32:44 INFO stream result: <C08BDF0JJB1>
2025-09-20 23:32:44 DEBUG inserted chunk
├ len: 2
├ channel_id: C01AY470Q8J
├ type: ThreadMessages
├ final: true
├ thread_only: false
└ id: 117507
2025-09-20 23:32:46 DEBUG channel finalisation
├ channel_id: C01AY470Q8J
└ is_complete: false
2025-09-20 23:32:46 DEBUG not complete, skipping
├ channel_id: C01AY470Q8J
└ is_complete: false
2025-09-20 23:32:46 DEBUG - getting thread
└ slack_link: C01AY470Q8J:1754897592.513729
2025-09-20 23:32:46 INFO stream result: <Thread[C01AY470Q8J:1755073396.902159]>
2025-09-20 23:32:46 DEBUG inserted chunk
├ id: 117508
├ len: 80
├ channel_id: CU3AG2PR7
├ type: ChannelUsers
├ final: false
└ thread_only: false
2025-09-20 23:32:46 DEBUG inserted chunk
├ id: 117509
├ len: 1
├ channel_id: CU3AG2PR7
├ type: ChannelInfo
├ final: false
└ thread_only: false
2025-09-20 23:32:46 DEBUG inserted chunk
├ id: 117510
├ len: 5
├ channel_id: C01AY470Q8J
├ type: ThreadMessages
├ final: true
└ thread_only: false
2025-09-20 23:32:48 DEBUG channel finalisation
├ channel_id: C01AY470Q8J
└ is_complete: false
2025-09-20 23:32:48 DEBUG not complete, skipping
├ is_complete: false
└ channel_id: C01AY470Q8J
2025-09-20 23:32:48 DEBUG - getting thread
└ slack_link: C01AY470Q8J:1754897366.818889
2025-09-20 23:32:48 INFO stream result: <Thread[C01AY470Q8J:1754897592.513729]>
2025-09-20 23:32:48 DEBUG inserted chunk
├ id: 117511
├ len: 1
├ channel_id: CU3AG2PR7
├ type: Messages
├ final: true
└ thread_only: false
2025-09-20 23:32:48 DEBUG channel finalisation
├ channel_id: CU3AG2PR7
└ is_complete: true
2025-09-20 23:32:48 DEBUG calling channel transform
├ channel_id: CU3AG2PR7
└ is_complete: true
2025-09-20 23:32:48 DEBUG server reported channel done channel_id: CU3AG2PR7
2025-09-20 23:32:48 INFO stream result: <CU3AG2PR7>
2025-09-20 23:32:48 DEBUG inserted chunk
├ thread_only: false
├ id: 117512
├ len: 3
├ channel_id: C01AY470Q8J
├ type: ThreadMessages
└ final: true
2025-09-20 23:32:49 ERROR WithRetry
├ maxAttempts: 3
├ error: channel_not_found
└ attempt: 1
2025-09-20 23:32:49 ERROR WithRetry
├ error: error getting channel information: channel_not_found
├ attempt: 1
└ maxAttempts: 3
2025-09-20 23:32:49 DEBUG channel finalisation
├ channel_id: C01AY470Q8J
└ is_complete: true
2025-09-20 23:32:49 DEBUG calling channel transform
├ channel_id: C01AY470Q8J
└ is_complete: true
2025-09-20 23:32:49 DEBUG - getting thread
└ slack_link: C08ML3Z71QX:1758259735.319249
2025-09-20 23:32:49 DEBUG inserted chunk
├ channel_id: C04TZLPCA8Y
├ type: ChannelUsers
├ final: false
├ thread_only: false
├ id: 117513
└ len: 53
2025-09-20 23:32:49 DEBUG inserted chunk
├ id: 117514
├ len: 1
├ channel_id: C04TZLPCA8Y
├ type: ChannelInfo
├ final: false
└ thread_only: false
2025-09-20 23:32:50 DEBUG inserted chunk
├ final: true
├ thread_only: false
├ id: 117515
├ len: 0
├ channel_id: C04TZLPCA8Y
└ type: Messages
2025-09-20 23:32:51 DEBUG channel finalisation
├ channel_id: C04TZLPCA8Y
└ is_complete: true
2025-09-20 23:32:51 DEBUG calling channel transform
├ channel_id: C04TZLPCA8Y
└ is_complete: true
2025-09-20 23:32:51 DEBUG server reported channel done channel_id: C04TZLPCA8Y
2025-09-20 23:32:51 DEBUG inserted chunk
├ thread_only: false
├ id: 117516
├ len: 3
├ channel_id: C08ML3Z71QX
├ type: ThreadMessages
└ final: true
2025-09-20 23:32:53 DEBUG channel finalisation
├ channel_id: C08ML3Z71QX
└ is_complete: false
2025-09-20 23:32:53 DEBUG not complete, skipping
├ channel_id: C08ML3Z71QX
└ is_complete: false
2025-09-20 23:32:53 DEBUG inserted chunk
├ thread_only: false
├ id: 117517
├ len: 14
├ channel_id: C06L55W53D3
├ type: ChannelUsers
└ final: false
2025-09-20 23:32:53 DEBUG inserted chunk
├ channel_id: C06L55W53D3
├ type: ChannelInfo
├ final: false
├ thread_only: false
├ id: 117518
└ len: 1
2025-09-20 23:32:53 DEBUG inserted chunk
├ channel_id: C06L55W53D3
├ type: Messages
├ final: true
├ thread_only: false
├ id: 117519
└ len: 0
2025-09-20 23:32:54 DEBUG channel finalisation
├ channel_id: C06L55W53D3
└ is_complete: true
2025-09-20 23:32:54 DEBUG calling channel transform
├ channel_id: C06L55W53D3
└ is_complete: true
^C2025-09-20 23:54:55 DEBUG mutex locked, stopping downloader
2025-09-20 23:54:55 DEBUG requests channel closed, waiting for all downloads to
│ complete
2025-09-20 23:54:55 DEBUG all files processed
2025-09-20 23:54:55 DEBUG worker exiting
2025-09-20 23:54:55 DEBUG download worker terminated worker: 1
2025-09-20 23:54:55 DEBUG worker exiting
2025-09-20 23:54:55 DEBUG worker exiting
2025-09-20 23:54:55 DEBUG download worker terminated worker: 0
2025-09-20 23:54:55 DEBUG download worker terminated worker: 3
2025-09-20 23:54:55 DEBUG worker exiting
2025-09-20 23:54:55 DEBUG download worker terminated worker: 2
2025-09-20 23:54:55 DEBUG wait complete: no more files to download
2025-09-20 23:54:55 DEBUG conversations done in: runWorkers
2025-09-20 23:54:55 DEBUG closing database connection
2025-09-20 23:54:55 INFO operation cancelled
slackdump resume -refresh -v slackdump_20250712_002557 63.49s user 40.51s system 6% cpu 24:49.55 total
Desktop (please complete the following information):
- OS: macOS
- OS Version: 15.5 (24F74)
- Slackdump Version:
Slackdump 3.1.7 (commit: Homebrew) built on: 2025-08-10T11:08:12Z
Additional context
Edit:
It always freezes 5 or 6 seconds after the error. When the freeze happens, Activity Monitor shows no CPU or network activity for the process.
The error message mentions retries, but it doesn't appear to actually do any retrying.
It seems pretty random how long it runs for before freezing. In running it repeatedly, it's frozen after:
- 10m 02s
- 04m 42s
- 02m 31s
- 08m 12s
- 02m 20s
Describe the bug
I'm trying to resume a slackdump archive. A couple of months ago, I fully populated it over the course of several days; and have done a resume on it several times since then. But now when I do so, after a few minutes, it shows this error, then seems to freeze a few seconds later:
Annoyingly, it doesn't say which channel is the problem, so I don't know what exactly happened to cause it.
The reason I am using Slackdump is that we sadly have a 6 month retention policy set, despite having a Business+ plan, and unlimited retention being a primary goal of Slack and a key reason you'd pay for it 🤦
Authentication type
Google SSO, which I did a couple of months ago (2025-07-12)
To Reproduce
time slackdump resume -refresh -v slackdump_20250712_002557Expected behavior
If a channel has been deleted, ignore it, and continuing to dump the rest of the channels.
Output
Here is the debug output from 10 seconds before the error, up until the freeze. Nothing further was logged after the last message for over 20 minutes (I then closed it). I've tried this a few times, and this time it showed a second related error.
Desktop (please complete the following information):
Slackdump 3.1.7 (commit: Homebrew) built on: 2025-08-10T11:08:12ZAdditional context
Edit:
It always freezes 5 or 6 seconds after the error. When the freeze happens, Activity Monitor shows no CPU or network activity for the process.
The error message mentions retries, but it doesn't appear to actually do any retrying.
It seems pretty random how long it runs for before freezing. In running it repeatedly, it's frozen after: