I'm trying to get started making my first mod following this tutorial series: https://www.youtube.com/watch?v=tDj58Ato6v8
After creating my first block when trying to launch it I get this error which I don't fully understand: https://pastebin.com/giuLSAU4
And a notification simply saying "failed to load mod null"
Would love some help I'm not sure what I did wrong