Suggestion To the EAQ

I myself am quite new to the modding scene, I started modding in February but have been in development hell a lot and have struggled to focus on one mod though I have been developing the current mod I've been working on since September and have made a lot of progress; during this time I have found a lot of helpful resources and have learnt a lot of things.    1. You can, I have had no Java experience previously and since modding have managed to be quite knowledgeable in Java.   2. Modding does not require massive teams, I and many others work alone, though having a team is certainly helpful in the modding process to get things done in a quicker and more organised way.   3. I absolutely have to recommend ModdingByKaupenjoe, he makes loads of tutorials for Minecraft from 1.16.5 and above with support for Forge, Fabric, and as of his 1.21 tutorials, Neoforge. These tutorials are really well made, covering almost every modding topic, (such as items, blocks, mobs, worldgen, etc.) and are pretty easy to follow, and Kaupenjoe always leaves the link to his GitHub repositories where you can view the code of that tutorial at your own pace as well as linking textures in the description of his videos for you to use. These forums are also quite good if you need help, though I have found that it sometimes takes a little while for a response but it is always worth the wait; from my experience the people on these forums have always been kind and helpful. There are also user-submitted tutorials that may be helpful as well.  Using GitHub to search up a certain class that you are wanting to use in your mod is also quite helpful, the video I have linked goes into more detail. I would also recommend planning out your mod before you make it to have a clearer idea of how you want your mod to be, including sketches and annotations are also a good idea for this. It has helped me make progress a lot quicker when programming as I already know how I want things to look/act.   I hope all this information helps!

I don't know what I did differently, but the error code changed to "Invalid signature for profile public key" so I set "enforce-secure-profile" to false since only my friend will be allowed to join anyway and then everything worked properly. Here's the logs anyway, but I hope the problem doesn't come back. https://paste.ee/p/Ri44L

Also add the client log

Mods

I tried to look for similar issues here on the forum already and couldn't find a fix. Just people who didn't read the rules properly.