Crash: Using Dictionary after ELI5 as another question

[Rogerthis]

1. Long press word (3 second+)
2. Select AI Assistant
3. Select ELI5
4. Press the Ask Another button
5. Select Dictionary
6. Crash

09/01/25-17:42:39 INFO Using markdown.lua (pure Lua) for markdown parsing
09/01/25-17:42:39 INFO Project: Title - Checking requirements in '.'
09/01/25-17:42:39 INFO Project: Title - All tests passed, loading into KOReader ver 202508000000
09/01/25-17:42:39 INFO Assistant: translate method overridden with AI Assistant
09/01/25-17:42:39 INFO Project: Title - Home directory is set to: /mnt/onboard/Books
09/01/25-17:42:42 INFO Restoring user input handling
g_mkdir failed: No such file or directory
./luajit: plugins/assistant.koplugin/assistant_dialog.lua:66: attempt to index local 'user_prompt' (a nil value)
stack traceback:
plugins/assistant.koplugin/assistant_dialog.lua:66: in function '_formatUserPrompt'
plugins/assistant.koplugin/assistant_dialog.lua:164: in function 'onAskQuestion'
plugins/assistant.koplugin/assistant_viewer.lua:568: in function 'callback'
plugins/assistant.koplugin/assistant_viewer.lua:620: in function 'callback'
frontend/ui/widget/buttontable.lua:81: in function 'callback'
frontend/ui/widget/button.lua:482: in function 'handleEvent'
frontend/ui/widget/container/inputcontainer.lua:266: in function 'handleEvent'
frontend/ui/widget/container/widgetcontainer.lua:83: in function 'propagateEvent'
frontend/ui/widget/container/widgetcontainer.lua:101: in function 'handleEvent'
frontend/ui/widget/container/widgetcontainer.lua:83: in function 'propagateEvent'
frontend/ui/widget/container/widgetcontainer.lua:101: in function 'handleEvent'
...
frontend/ui/widget/container/widgetcontainer.lua:101: in function 'handleEvent'
frontend/ui/widget/container/widgetcontainer.lua:83: in function 'propagateEvent'
frontend/ui/widget/container/widgetcontainer.lua:101: in function 'handleEvent'
frontend/ui/uimanager.lua:896: in function 'sendEvent'
frontend/ui/uimanager.lua:53: in function 'default'
frontend/ui/uimanager.lua:1423: in function 'handleInputEvent'
frontend/ui/uimanager.lua:1523: in function 'handleInput'
frontend/ui/uimanager.lua:1567: in function 'run'
./reader.lua:265: in main chunk
[C]: at 0x00013ea1
!!!!
Uh oh, something went awry... (Crash n°1: 09/01/25 @ 17:43:07)
Running FW 4.38.23171 on Linux 4.1.15-00867-gf1ef3c8 (#103 SMP PREEMPT Tue Oct 1 06:24:23 Asia 2024)
Attempting to restart KOReader . . .

[omer-faruq]

The dictionary button and the screen are not compatible with this usage. That's why I sent a fix to hide it from the ask additional question pop-up.