# Mmctl \`Unhandled panic in job\` when importing **URL:** \ **Category:** Command Line Interface\ **Created:** [March 7, 2025, 3:58pm UTC](https://forum.mattermost.com/t/mmctl-unhandled-panic-in-job-when-importing/22753 "2025-03-07T15:58:03Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![DeathCamel58](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mattermost.com/deathcamel58/32/8775_2.png) [@DeathCamel58](https://forum.mattermost.com/u/DeathCamel58)\ **Post date:** [March 7, 2025, 3:58pm UTC](https://forum.mattermost.com/t/mmctl-unhandled-panic-in-job-when-importing/22753/1 "2025-03-07T15:58:03Z")
I just set up a new Mattermost server using the omnibus installation method. Following along with [Migrate from Slack](https://docs.mattermost.com/onboard/migrate-from-slack.html), I’ve managed to export the slack data. Importing `mattermost-bulk-import.zip` using `sudo mmctl --local import process --bypass-upload /home/ubuntu/mattermost-bulk-import.zip` results in the server crashing, along with some errors: ```auto ID: zb7t4fbpnjnriyw73e6mm4nr3e Type: import_process Status: error Created: 2025-03-07 15:36:01 +0000 UTC Started: 2025-03-07 15:36:11 +0000 UTC Data: map[error:Unable to update the job. extract_content:true import_file:/home/ubuntu/mattermost-bulk-import.zip local_mode:true] ``` I was wondering if the file was too large (600+MB), so I used [`mmimportjs`](https://github.com/mickmister/mmimportjs) to break the file into small chunks (I modified the code to do 500 line chunks for diagnostics. Running `sudo mmctl --local import process --bypass-upload 000001-mattermost_import.jsonl` results in `Import process job successfully created, ID: wpoxomezkt84xjhn9s1aekxyoc` Using `sudo mmctl --local import job show wpoxomezkt84xjhn9s1aekxyoc` shows: ```auto ID: wpoxomezkt84xjhn9s1aekxyoc Type: import_process Status: error Created: 2025-03-07 15:49:03 +0000 UTC Started: 2025-03-07 15:49:12 +0000 UTC Data: map[error:Unable to update the job. extract_content:true import_file:/home/ubuntu/2025-03-07T15:43:36/000001-mattermost_import.jsonl local_mode:true] ``` Looking into the server logs, I see that that job fails with the log event: ```auto { "caller": "jobs/jobs.go:230", "job": { "create_at": 1741362543914, "data": { "error": "Unable to update the job.", "extract_content": "true", "import_file": "/home/ubuntu/2025-03-07T15:43:36/000001-mattermost_import.jsonl", "local_mode": "true" }, "id": "wpoxomezkt84xjhn9s1aekxyoc", "last_activity_at": 1741362552878, "priority": 0, "progress": 0, "start_at": 1741362552878, "status": "in_progress", "type": "import_process" }, "job_create_at": "Mar 7 15:49:03.914", "job_id": "wpoxomezkt84xjhn9s1aekxyoc", "job_type": "import_process", "level": "error", "msg": "Unhandled panic in job", "panic": "runtime error: invalid memory address or nil pointer dereference", "stack": "goroutine 239 [running]:\nruntime/pprof.writeGoroutineStacks({0x5579b00, 0xc0020803a0})\n\truntime/pprof/pprof.go:743 +0x6a\nruntime/pprof.writeGoroutine({0x5579b00?, 0xc0020803a0?}, 0x0?)\n\truntime/pprof/pprof.go:732 +0x25\nruntime/pprof.(*Profile).WriteTo(0x48dd3e2?, {0x5579b00?, 0xc0020803a0?}, 0x0?)\n\truntime/pprof/pprof.go:369 +0x14b\ngithub.com/mattermost/mattermost/server/v8/channels/jobs.(*JobServer).HandleJobPanic(0xc001a4e360, {0x55ac8c8, 0xc001dd0c30}, 0xc0035025a0)\n\tgithub.com/mattermost/mattermost/server/v8/channels/jobs/jobs.go:229 +0xae\npanic({0x42d6100?, 0x7b154a0?})\n\truntime/panic.go:770 +0x132\ngithub.com/mattermost/mattermost/server/v8/channels/jobs/import_process.MakeWorker.func2({0x55ac8c8?, 0xc001dd0c30?}, 0xc0035025a0)\n\tgithub.com/mattermost/mattermost/server/v8/channels/jobs/import_process/worker.go:61 +0x5ed\ngithub.com/mattermost/mattermost/server/v8/channels/jobs.(*SimpleWorker).DoJob(0xc001e28190, 0xc0054dd080)\n\tgithub.com/mattermost/mattermost/server/v8/channels/jobs/base_workers.go:94 +0x3c6\ngithub.com/mattermost/mattermost/server/v8/channels/jobs.(*SimpleWorker).Run(0xc001e28190)\n\tgithub.com/mattermost/mattermost/server/v8/channels/jobs/base_workers.go:53 +0xc5\ncreated by github.com/mattermost/mattermost/server/v8/channels/jobs.(*Workers).Start in goroutine 1\n\tgithub.com/mattermost/mattermost/server/v8/channels/jobs/workers.go:52 +0x12b\n\ngoroutine 1 [chan receive, 12 minutes]:\ngithub.com/mattermost/mattermost/server/v8/cmd/mattermost/commands.runServer(0xc00124a230, 0xc00003fb00)\n\tgithub.com/mattermost/mattermost/server/v8/cmd/mattermost/commands/server.go:115 +0x225\ngithub.com/mattermost/mattermost/server/v8/cmd/mattermost/commands.serverCmdF(0x7bad940, {0x48ca4f2?, 0x4?, 0x48ca4c6?})\n\tgithub.com/mattermost/mattermost/server/v8/cmd/mattermost/commands/server.go:57 +0x10a\ngithub.com/spf13/cobra.(*Command).execute(0x7bad940, {0xc000102060, 0x0, 0x0})\n\tgithub.com/spf13/cobra@v1.8.1/command.go:985 +0xaca\ngithub.com/spf13/cobra.(*Command).ExecuteC(0x7bad940)\n\tgithub.com/spf13/cobra@v1.8.1/command...", "timestamp": "2025-03-07 15:49:12.920 Z", "worker_name": "ImportProcess" } ``` Is there any additional troubleshooting that I should do, or any workaround? ---
**Author:** ![john.combs](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mattermost.com/john.combs/32/7118_2.png) [@john.combs](https://forum.mattermost.com/u/john.combs)\ **Post date:** [March 11, 2025, 11:14pm UTC](https://forum.mattermost.com/t/mmctl-unhandled-panic-in-job-when-importing/22753/2 "2025-03-11T23:14:58Z")
Hi @DeathCamel58! Thanks for sharing the detailed logs and steps you’ve taken so far. It looks like the issue might be related to the size or contents of the import file. I recommend verifying the formatting of the JSON data using the schema outlined in our [Bulk Import and Export documentation](https://docs.mattermost.com/onboard/bulk-loading-data.html). Additionally, checking for any invalid or unsupported entries in the import file could help. Let us know if you need further assistance! 😊