Bulk import of devices crashes the WebUI if device_type is not found and rack/location info is given

[empusas]

NetBox version

v3.1.5

Python version

3.9

Steps to Reproduce

1. Create a device import with an unknown device type and rack and location info.
2. past the content into the web interface bulk import
3. start the import

example
tenant,manufacturer,device_role,device_type,name,site,location,rack,position,face,status
lulu,Cisco,Access Switch,Cata8T-4G,Gandalf,Neverland,Room 1,14,24,front,active

Expected Behavior

A red popup error message should appear like for any other issues with the imported data.

Observed Behavior

The WebUI crashes with a server error.