Describe the bug

When using the Simple Python Editor to create a custom GRASS module with a GUI interface, there's an issue when running the module without changing any of the default values in the GUI. Instead of executing the command, the GUI simply reopens, and the command is not run. If any parameter is changed, the module runs correctly.

To reproduce

1. Create a module using Simple Python Editor.
2. Leave all parameters in their default state.
3. Run the module via GUI.
4. the GUI reopens instead of executing the command.

Expected behavior

The module should execute with the default parameters, without requiring the user to change any values.