Blur Me settings do not load

[rafedaniels]

When I enter the settings for the Blur Me tweak I get this error

TypeError: this._sigma_scale is null

Stack trace:
  _init@/home/rafe/.local/share/gnome-shell/extensions/blur-me@nunchucks/prefs.js:36:7
  buildPrefsWidget@/home/rafe/.local/share/gnome-shell/extensions/blur-me@nunchucks/prefs.js:165:10
  _init@resource:///org/gnome/Shell/Extensions/js/extensionsService.js:207:40
  OpenExtensionPrefsAsync/<@resource:///org/gnome/Shell/Extensions/js/extensionsService.js:122:28
  asyncCallback@resource:///org/gnome/gjs/modules/core/overrides/Gio.js:132:22
  run@resource:///org/gnome/Shell/Extensions/js/dbusService.js:177:20
  main@resource:///org/gnome/Shell/Extensions/js/main.js:19:13
  run@resource:///org/gnome/gjs/modules/script/package.js:222:19
  start@resource:///org/gnome/gjs/modules/script/package.js:206:8
  @/usr/share/gnome-shell/org.gnome.Shell.Extensions:1:17