Python plug-in error when no image

[nelo]

You don't have to reload or restart, unless you change stuff in what formerly was the registration.

To start without an image check this answer here:
https://discourse.gnome.org/t/gimp-2-99-...mage/12544

A first little tutorial is here:
https://testing.docs.gimp.org/2.99/en/gi...orial.html