ReferenceError: Can't find variable: get_expressions_json

[40476]

I'm getting this error and expressions are not working.

gi.repository.GLib.GError: WebKitJavascriptError: undefined:1:21: ReferenceError: Can't find variable: get_expressions_json (699)

usr_40476@2xeon:~> flatpak run moe.nyarchlinux.assistant           
ae
Traceback (most recent call last):
  File "/app/share/nyarchassistant/nyarchassistant/handlers/avatar/live2d_handler.py", line 168, in wait_emotions
    value = self.webview.evaluate_javascript_finish(result)
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
gi.repository.GLib.GError: WebKitJavascriptError: undefined:1:21: ReferenceError: Can't find variable: get_expressions_json (699)
127.0.0.1 - - [07/Sep/2025 15:02:18] "GET /?model=Arch%2Farch+chan+model0.model3.json&bg=%23fafafb&scale=1.0 HTTP/1.1" 200 -
127.0.0.1 - - [07/Sep/2025 15:02:18] "GET /normalize.min.css HTTP/1.1" 200 -
127.0.0.1 - - [07/Sep/2025 15:02:18] "GET /style.css HTTP/1.1" 200 -
127.0.0.1 - - [07/Sep/2025 15:02:18] "GET /live2dcubismcore.min.js HTTP/1.1" 200 -
127.0.0.1 - - [07/Sep/2025 15:02:18] "GET /live2d.min.js HTTP/1.1" 200 -
127.0.0.1 - - [07/Sep/2025 15:02:18] "GET /pixi.min.js HTTP/1.1" 200 -
127.0.0.1 - - [07/Sep/2025 15:02:18] "GET /index.min.js HTTP/1.1" 200 -
127.0.0.1 - - [07/Sep/2025 15:02:18] "GET /script.js HTTP/1.1" 200 -
127.0.0.1 - - [07/Sep/2025 15:02:19] "GET /models/Arch/arch%20chan%20model0.model3.json HTTP/1.1" 200 -
127.0.0.1 - - [07/Sep/2025 15:02:19] "GET /models/Arch/Arch%20Chan%20Model0.2048/texture_00.png HTTP/1.1" 200 -
127.0.0.1 - - [07/Sep/2025 15:02:19] "GET /models/Arch/Arch%20Chan%20Model0.moc3 HTTP/1.1" 200 -
127.0.0.1 - - [07/Sep/2025 15:02:19] "GET /models/Arch/Arch%20Chan%20Model0.physics3.json HTTP/1.1" 200 -