Closes #4991: Add Python and NetBox versions to error page

docs/release-notes/version-2.9.md

@@ -1,5 +1,13 @@
 # NetBox v2.9
 
+## v2.9.1 (FUTURE)
+
+### Enhancements
+
+* [#4991](https://github.com/netbox-community/netbox/issues/4991) - Add Python and NetBox versions to error page
+
+---
+
 ## v2.9.0 (2020-08-21)
 
 ### New Features

netbox/templates/500.html

@@ -31,7 +31,10 @@
                             The complete exception is provided below:
                         </p>
 <pre><strong>{{ exception }}</strong><br />
-{{ error }}</pre>
+{{ error }}
+
+Python version: {{ python_version }}
+NetBox version: {{ netbox_version }}</pre>
                         <p>
                             If further assistance is required, please post to the <a href="https://groups.google.com/forum/#!forum/netbox-discuss">NetBox mailing list</a>.
                         </p>

netbox/utilities/views.py

@@ -1,8 +1,10 @@
 import logging
+import platform
 import re
 import sys
 from copy import deepcopy
 
+from django.conf import settings
 from django.contrib import messages
 from django.contrib.auth.decorators import login_required
 from django.contrib.contenttypes.models import ContentType
@@ -1421,6 +1423,8 @@ def server_error(request, template_name=ERROR_500_TEMPLATE_NAME):
     type_, error, traceback = sys.exc_info()
 
     return HttpResponseServerError(template.render({
+        'python_version': platform.python_version(),
+        'netbox_version': settings.VERSION,
         'exception': str(type_),
         'error': error,
     }))