You asked it so much, so I made this update for you. Oh.... I won't pass my exams
Now, my plugin supports 1.16 & 1.16.1 versions (version 1.13 of GES supports only these versions)
And... Errors became more clear. You will see in the console, if your config has some problems.
And no more "GraveEntitySpawn doesn't specify an api-version" on the server start!