It is recommended to add "class_name" to the class to adapt to the new version of Godot.

[TheOneImmortal]

This addons can't run on godot 4.2.1.stable.

To make it work on the 4.2.1.stable. Add class_name keyword.

For example:

old :
@tool
extends Panel

new :
@tool
class_name TodoProject
extends Panel

Files that need to be modified include:

• Current.gd
• Dock.gd
• Project.gd
• todoItem_class.gd
• todo_class.gd