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Error returns on the Render Config tab for VM #8596

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opened 2025-12-29 20:38:38 +01:00 by adam · 1 comment
adam commented 2025-12-29 20:38:38 +01:00
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Originally created by @VitMain on GitHub (Sep 8, 2023).

Originally assigned to: @jeremystretch on GitHub.

NetBox version

v.3.6.1

Python version

3.8

Steps to Reproduce

  1. Open Virtualization -> Virtual Machines list
  2. Open any existing VM, then click on the Render Config tab and get the error page.

I tried creating the new VM and got the same result with the error.

Also tried to reproduce on the empty, fresh new database.

  1. Drop database
  2. Create database
  3. Granted permissions for the user
  4. Run update.sh
  5. logged in to the netbox
  6. Created cluster type
  7. Created cluster
  8. Created VM, with name and cluster, did not fill role.
  9. Clicked on the Render Config tab for VM, then got the error page.

In the case of assigning the role to the VM (for the existing or new VMs), the problem is gone.

Expected Behavior

Open the tab without any errors.

Observed Behavior

Server Error

There was a problem with your request. Please contact an administrator.

The complete exception is provided below:

<class 'AttributeError'>

'NoneType' object has no attribute 'config_template'

Python version: 3.8.10
NetBox version: 3.6.1
Plugins: None installed

If further assistance is required, please post to the NetBox discussion forum on GitHub.

Originally created by @VitMain on GitHub (Sep 8, 2023). Originally assigned to: @jeremystretch on GitHub. ### NetBox version v.3.6.1 ### Python version 3.8 ### Steps to Reproduce 1. Open Virtualization -> Virtual Machines list 2. Open any existing VM, then click on the Render Config tab and get the error page. I tried creating the new VM and got the same result with the error. Also tried to reproduce on the empty, fresh new database. 1. Drop database 2. Create database 3. Granted permissions for the user 4. Run update.sh 5. logged in to the netbox 6. Created cluster type 7. Created cluster 8. Created VM, with name and cluster, did not fill role. 9. Clicked on the Render Config tab for VM, then got the error page. In the case of assigning the role to the VM (for the existing or new VMs), the problem is gone. ### Expected Behavior Open the tab without any errors. ### Observed Behavior Server Error There was a problem with your request. Please contact an administrator. The complete exception is provided below: <class 'AttributeError'> 'NoneType' object has no attribute 'config_template' Python version: 3.8.10 NetBox version: 3.6.1 Plugins: None installed If further assistance is required, please post to the [NetBox discussion forum](https://github.com/netbox-community/netbox/discussions) on GitHub.
adam added the type: bugstatus: acceptedseverity: low labels 2025-12-29 20:38:38 +01:00
adam closed this issue 2025-12-29 20:38:38 +01:00
adam commented 2025-12-29 20:38:39 +01:00
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@DanSheps commented on GitHub (Sep 8, 2023):

Marking this as low priority.

Condition to trigger: Role is null

@DanSheps commented on GitHub (Sep 8, 2023): Marking this as low priority. Condition to trigger: Role is null
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Reference: starred/netbox#8596
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