Traceback (most recent call last): 
 File "C:\Users\<username>\AppData\Roaming\pyRevit-Master\extensions\pyRevitTools.extension\pyRevit.tab\Toggles.panel\toggles3.stack\ViewRange.pushbutton\script.py", line 128, in context_changed 
 corners = corners_from_bb(level_bbox) 
 File "C:\Users\<username>\AppData\Roaming\pyRevit-Master\extensions\pyRevitTools.extension\pyRevit.tab\Toggles.panel\toggles3.stack\ViewRange.pushbutton\script.py", line 95, in corners_from_bb 
 transform = bbox.Transform 
AttributeError: 'NoneType' object has no attribute 'Transform'

Microsoft Windows [Version 10.0.19045.3448]
(c) Microsoft Corporation. All rights reserved.

C:\Users\<username>>pyrevit env
==> Registered Clones (full git repos)
==> Registered Clones (deployed from archive/image)
master | Deploy: "basepublic" | Branch: "master" | Version: "4.8.16.24121+2117" | Path: "C:\Users\<username>\AppData\Roaming\pyRevit-Master"
==> Attachments
master | Product: "24.1" | Engine: DEFAULT (2711) | Path: "C:\Users\<username>\AppData\Roaming\pyRevit-Master"
master | Product: "2023.1.1" | Engine: DEFAULT (2711) | Path: "C:\Users\<username>\AppData\Roaming\pyRevit-Master"
master | Product: "2022.1.5" | Engine: DEFAULT (2711) | Path: "C:\Users\<username>\AppData\Roaming\pyRevit-Master"
master | Product: "2021.1.9" | Engine: DEFAULT (2711) | Path: "C:\Users\<username>\AppData\Roaming\pyRevit-Master"
master | Product: "2020.2.7" | Engine: DEFAULT (2711) | Path: "C:\Users\<username>\AppData\Roaming\pyRevit-Master"
master | Product: "2019.2.5" | Engine: DEFAULT (2711) | Path: "C:\Users\<username>\AppData\Roaming\pyRevit-Master"
master | Product: "2018.3.3 Security Fix" | Engine: DEFAULT (2711) | Path: "C:\Users\<username>\AppData\Roaming\pyRevit-Master"
==> Installed Extensions
==> Default Extension Search Path
C:\Users\<username>\AppData\Roaming\pyRevit\Extensions
==> Extension Search Paths
==> Extension Sources - Default
https://github.com/pyrevitlabs/pyRevit/raw/master/extensions/extensions.json
==> Extension Sources - Additional
==> Installed Revits
24.1 | Version: 24.1.0.66 | Build: 20230701_1515(x64) | Language: 1033 | Path: "C:\Program Files\Autodesk\Revit 2024\"
2023.1.1 | Version: 23.1.10.4 | Build: 20221122_1550(x64) | Language: 1033 | Path: "C:\Program Files\Autodesk\Revit 2023\"
2022.1.5 | Version: 22.1.50.17 | Build: 20230915_1530(x64) | Language: 1033 | Path: "C:\Program Files\Autodesk\Revit 2022\"
2021.1.9 | Version: 21.1.90.15 | Build: 20230907_1515(x64) | Language: 1033 | Path: "C:\Program Files\Autodesk\Revit 2021\"
2020.2.7 | Version: 20.2.70.6 | Build: 20220112_1230(x64) | Language: 1033 | Path: "C:\Program Files\Autodesk\Revit 2020\"
2019.2.5 | Version: 19.2.50.16 | Build: 20220111_1110(x64) | Language: 1033 | Path: "C:\Program Files\Autodesk\Revit 2019\"
2018.3.3 Security Fix | Version: 18.3.3.18 | Build: 20190510_1515(x64) | Language: 1033 | Path: "C:\Program Files\Autodesk\Revit 2018\"
==> Running Revit Instances
PID: 38168 | 2023.1.1 | Version: 23.1.10.4 | Build: 20221122_1550(x64) | Language: 0 | Path: "C:\Program Files\Autodesk\Revit 2023"
==> User Environment
Microsoft Windows 10 [Version 10.0.19045]
Executing User: <username>
Active User:
Admin Access: No
%APPDATA%: "C:\Users\<username>\AppData\Roaming"
Latest Installed .Net Framework: 4.8
Installed .Net Target Packs: v3.5 v4.0 v4.5 v4.5.1 v4.5.2 v4.6 v4.6.1 v4.6.2 v4.7 v4.7.1 v4.7.2 v4.8 v4.X
Installed .Net-Core Target Packs: v5.0.400
pyRevit CLI v4.8.16.24121+2117.23a0b8cbc4babdeb29a0611e159d017bbe9cbad5