API Issue on 4.2.2 (AttributeError: Type object Meta has no attribute brief_fields) #1372

gabewinch · 2025-01-22T15:29:56Z

gabewinch
Jan 22, 2025

Hello all,

I'm running into the following issue with my installation on NetBox v4.2.2, first encountered while trying to use the nb_inventory ansible plugin after install at the following URL:

https://netbox-url/api/dcim/devices

<html lang="en">

<head>
    <title>Server Error</title>
    <link rel="stylesheet" href="/static/netbox-light.css" />
    <meta charset="UTF-8">
</head>

<body>
    <div class="container-fluid">
        <div class="row">
            <div class="col col-md-6 offset-md-3">
                <div class="card border-danger mt-5">
                    <h2 class="card-header">
                        <i class="mdi mdi-alert"></i> Server Error
                    </h2>
                    <div class="card-body">
                        
                            <p>
                                There was a problem with your request. Please contact an administrator.
                            </p>
                        
                        <hr />
                        <p>
                            The complete exception is provided below:
                        </p>
<pre class="block"><strong>&lt;class &#x27;AttributeError&#x27;&gt;</strong><br />
type object &#x27;Meta&#x27; has no attribute &#x27;brief_fields&#x27;

Python version: 3.12.3
NetBox version: 4.2.2
Plugins: None installed
</pre>
                        <p>
                            If further assistance is required, please post to the <a href="https://github.com/netbox-community/netbox/discussions">NetBox discussion forum</a> on GitHub.
                        </p>
                        <div class="text-end">
                            <a href="/" class="btn btn-primary">Home Page</a>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
</body>

</html>

I tested this on the netbox dev environment (4.2.0), and was not able to replicate issue. Thus, I downgraded (4.2.2 > 4.2.0) and the issue resolved itself, successfully able to use this part of the API and pull dynamic inventory in Ansible. Any ideas here? Thanks

rodvand · 2025-01-22T20:58:21Z

rodvand
Jan 22, 2025
Maintainer

Could you post (a sanitized) your inventory-file?

0 replies

sc68cal · 2025-01-23T02:20:46Z

sc68cal
Jan 23, 2025
Maintainer

Can you also see if you can get any logs from the NetBox server itself, see if it printed a stack trace?

0 replies

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API Issue on 4.2.2 (AttributeError: Type object Meta has no attribute brief_fields) #1372

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API Issue on 4.2.2 (AttributeError: Type object Meta has no attribute brief_fields) #1372

gabewinch Jan 22, 2025

Replies: 2 comments

rodvand Jan 22, 2025 Maintainer

sc68cal Jan 23, 2025 Maintainer

gabewinch
Jan 22, 2025

rodvand
Jan 22, 2025
Maintainer

sc68cal
Jan 23, 2025
Maintainer