This error will be from the new version of Decker making some changes that necessitated some updates to some of the modules. You'll need to update the "twee" module using the newer version in the Decker examples folder - you should be able to just import it over the top of the old one.
Viewing post in Thanks to this tool, I’ve made the very first game of my life!
I’ve just updated the plugin! I also went through the Phinxel documentation and found the program with the lock feature — thanks so much for the manual!
However, the new version of Decker seems different from the original one. I’d still like to keep my old setting: have the page permanently pinned to the taskbar right after exporting it as HTML. But I have no idea how to do that now 😇. I feel like I asked about this before. Also, I can’t even remember the keyboard shortcut for “Save As”.T-T