** Description changed:

  Installing ISO daily 20210119 Kubuntu Hirsute on Lenovo V14 IIL running
  in UEFI + secure boot mode.
  
  Ubiquity crashed when selecting WiFi network during the install. The
  error message Installer crashed appeared when I attempted to select the
  WiFi network.
  
  Booted up the image and clicked on the "Install Kubuntu" button.
  
  The installer started as normal - I then selected the correct keyboard
  layout and progressed onto the Wireless screen- selected connect to this
  network - and selected my wireless and the installer crashed with the
  failure message.
  
  I will upload screenshot via another computer after filing this bug.
+ 
+ Crash details:
+ 
+ Exception in KDE frontend (invoking crash handler):
+ Traceback (most recent call last):
+   File "/usr/lib/ubiquity/ubiquity/frontend/kde_components/nmwidgets.py", 
line 452, in _on_current_changed
+     passphrase = self.view.get_cached_passphrase()
+   File "/usr/lib/ubiquity/ubiquity/frontend/kde_components/nmwidgets.py", 
line 289, in get_cached_passphrase
+     return self.wifi_model.passphrases_cache.get(ssid, '')
+ TypeError: unhashable type: 'QVariant'
  
  ProblemType: Bug
  DistroRelease: Ubuntu 21.04
  Package: ubiquity 21.04.4
  ProcVersionSignature: Ubuntu 5.8.0-36.40+21.04.1-generic 5.8.18
  Uname: Linux 5.8.0-36-generic x86_64
  ApportVersion: 2.20.11-0ubuntu55
  Architecture: amd64
  CasperMD5CheckResult: pass
  CasperVersion: 1.456
  CurrentDesktop: KDE
  Date: Tue Jan 19 10:46:34 2021
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/kubuntu.seed 
maybe-ubiquity quiet splash ---
  LiveMediaBuild: Kubuntu 21.04 "Hirsute Hippo" - Alpha amd64 (20210119)
  ProcEnviron:
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=C.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubiquity
  UpgradeStatus: No upgrade log present (probably fresh install)

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https://bugs.launchpad.net/bugs/1912327

Title:
  Ubiquity crashed when selecting WiFi network

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