Yes, but the server running in the folder mods I see no configuration file to set sponge API and server cat in it should have information on sponge?.
The MCVersion version of the site https://mcversions.net/ works well I can play it without the API I try to create a mods folder on the version of McVersion Sponge is not taken into account I think it '^^ is normal.
But with the forge version yes I have sponge in the loading consol with the message signal above.
This is the version of sponge which is not in 1397 ??.