The last job (Sync branch) failed with an error: ModuleNotFoundError("No module named 'thumbnail'") #804

New Issue

MrUnknownDE · 2026-04-05T17:50:18+02:00

MrUnknownDE commented

2026-04-05 17:50:18 +02:00

Originally created by @aoforb on 11/27/2025

NetBox Edition

NetBox Community

NetBox Version

v4.4.6

Python Version

3.10

Steps to Reproduce

Hello,

After upgrading to v4.4.6 from v4.4.3 yesterday. Before the upgrade, I made sure the branch we have open was fully synced with the main, the migrate after upgrade was successful.

Since then some changes were made on the main branch which I want to sync, however the sync is now failing with this No module named 'thumbnail' error.

I checked the venv and the sorl.thumbnail module is present.

Thanks

Expected Behavior

Successful sync

Observed Behavior

{
    "log": [
        "Syncing branch core-switch (branch_7a6mf5u3)",
        "Found 3 changes to sync",
        "Setting branch status to syncing",
        "Applying change 875506 using schema_branch_7a6mf5u3 (IPAM | prefix REDACTED updated by REDACTED)",
        "No module named 'thumbnail'"
    ]
}

REDACTED@netbox:/opt/netbox$ sudo ./venv/bin/python3 netbox/manage.py nbshell
### NetBox interactive shell (netbox)
### Python v3.10.12 | Django v5.2.8 | NetBox Community v4.4.6
### Plugins: netbox_acls v1.9.1, netbox_bgp v0.17.0, netbox_branching v0.7.2, netbox_inventory v2.4.1, netbox_topology_views v4.4.0
### lsapps() & lsmodels() will show available models. Use help(<model>) for more info.
>>> import thumbnail
Traceback (most recent call last):
  File "/usr/lib/python3.10/code.py", line 90, in runcode
    exec(code, self.locals)
  File "<console>", line 1, in <module>
ModuleNotFoundError: No module named 'thumbnail'

REDACTED@netbox:/opt/netbox$ sudo ./venv/bin/python3 netbox/manage.py nbshell
### NetBox interactive shell (netbox)
### Python v3.10.12 | Django v5.2.8 | NetBox Community v4.4.6
### Plugins: netbox_acls v1.9.1, netbox_bgp v0.17.0, netbox_branching v0.7.2, netbox_inventory v2.4.1, netbox_topology_views v4.4.0
### lsapps() & lsmodels() will show available models. Use help(<model>) for more info.
>>> 
>>> 
>>> import sorl.thumbnail
>>>

*Originally created by @aoforb on 11/27/2025* ### NetBox Edition NetBox Community ### NetBox Version v4.4.6 ### Python Version 3.10 ### Steps to Reproduce Hello, After upgrading to v4.4.6 from v4.4.3 yesterday. Before the upgrade, I made sure the branch we have open was fully synced with the main, the migrate after upgrade was successful. Since then some changes were made on the main branch which I want to sync, however the sync is now failing with this `No module named 'thumbnail'` error. I checked the `venv` and the `sorl.thumbnail` module is present. Thanks ### Expected Behavior Successful sync ### Observed Behavior ``` { "log": [ "Syncing branch core-switch (branch_7a6mf5u3)", "Found 3 changes to sync", "Setting branch status to syncing", "Applying change 875506 using schema_branch_7a6mf5u3 (IPAM | prefix REDACTED updated by REDACTED)", "No module named 'thumbnail'" ] } ``` ``` REDACTED@netbox:/opt/netbox$ sudo ./venv/bin/python3 netbox/manage.py nbshell ### NetBox interactive shell (netbox) ### Python v3.10.12 | Django v5.2.8 | NetBox Community v4.4.6 ### Plugins: netbox_acls v1.9.1, netbox_bgp v0.17.0, netbox_branching v0.7.2, netbox_inventory v2.4.1, netbox_topology_views v4.4.0 ### lsapps() & lsmodels() will show available models. Use help(<model>) for more info. >>> import thumbnail Traceback (most recent call last): File "/usr/lib/python3.10/code.py", line 90, in runcode exec(code, self.locals) File "<console>", line 1, in <module> ModuleNotFoundError: No module named 'thumbnail' ``` ``` REDACTED@netbox:/opt/netbox$ sudo ./venv/bin/python3 netbox/manage.py nbshell ### NetBox interactive shell (netbox) ### Python v3.10.12 | Django v5.2.8 | NetBox Community v4.4.6 ### Plugins: netbox_acls v1.9.1, netbox_bgp v0.17.0, netbox_branching v0.7.2, netbox_inventory v2.4.1, netbox_topology_views v4.4.0 ### lsapps() & lsmodels() will show available models. Use help(<model>) for more info. >>> >>> >>> import sorl.thumbnail >>> ```

MrUnknownDE closed this issue

2026-04-05 17:50:18 +02:00

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Branches Tags

main

21455-sql-indexes-audit

21357-register-model-actions

feature

20924-plugin-ui-components

21766-improve-test-coverage-for-sortable-table-columns

21157-export-template-public-models

21025-pre-render-config-contexts

21364-swagger

feature-ip-prefix-link

20911-dropdown-3

fix_module_substitution

21160-filterset

20911-dropdown-2

20044-elevation-stuck-lightmode

7604-filter-modifiers-v3

20660-script-load

19724-graphql

14884-script

19720-macaddress-interface-generic-relation

fix-19669-api-image-download

7604-filter-modifiers

19275-fixes-interface-bulk-edit

fix-17794-get_field_value_return_list

11507-show-aggregate-and-rir-on-api

9583-add_column_specific_search_field_to_tables

No Label netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox

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Reference: github/netbox#804