Can't open created theme

[alt165am]

Hey-o! First time (ever) making a ticket over here. I apologize in advance as I'm not "program-y literate" and I'm but a simple Pixelorama enjoyer.

So! I intended make a theme based on the Dracula palette, using the theme template from the 'Creating a new extension' in Pixelorama and PixeloramaThemeCreator: first attempt was successful as I was able to open the extension over Pixelorama, but I noticed there were some things missing on the theme so I included the 'assets' folder from this repo and re-exported the project in Godot.

After that, if I try to add the new extension in Pixelorama using the .pck or .zip, the program just closes without warning and the theme is not loaded.

I'm using the flatpak version of Pixelorama v1.0.5-stable
My OS is LMD6 Faye. Kernel 6.1.0-28-amd64

Here's the extension's folder Dracula Theme.zip. Inside the 'draculapalette' folder is the .tres made with PixeloramaThemeCreator.

Saludos!