'NoneType' object has no attribute '_base

Andrey

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Dec 29, 2020, 9:28:17 AM12/29/20

to NetBox

The complete exception is provided below:

<class 'AttributeError'>
'NoneType' object has no attribute '_base_manager' Python version: 3.7.3 NetBox version: 2.10.2

How is it solved?

justi...@gmail.com

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Dec 29, 2020, 11:30:12 AM12/29/20

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Can you give us some kind of indication of what you're doing when this happens?

Andrey

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Dec 29, 2020, 12:55:35 PM12/29/20

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I go to the site http://0.0.0.0:8000/ and see this message.

вторник, 29 декабря 2020 г. в 23:30:12 UTC+7, justi...@gmail.com:

Brian Candler

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Dec 30, 2020, 5:36:30 AM12/30/20

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1. Do you have any plugins installed??

2. Are you definitely running netbox inside a virtualenv, using the exact package versions from requirements.txt?

3. Did you upgrade by untarring a new netbox release on top of an old netbox release? That doesn't work - it can leave behind files which need to be deleted.

4. Otherwise, you need to show the full backtrace. You can do this by setting DEBUG=True in configuration.py, or by setting EMAIL and ADMINS (in which case, a backtrace is E-mailed whenever an exception occurs)

Andrey

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Dec 30, 2020, 6:58:41 AM12/30/20

to Brian Candler, NetBox

Error during template rendering

In template /opt/netbox-2.10.2/netbox/templates/base.html, error at line 0