I'm having a problem that occurs whenever I make a subclass. Currently making a subclass for the warlock to fit the setting of my world for players to use, but every time I create the subclass, it says;

• This homebrew Subclass does not have the necessary class features with the correct required levels.
   

I don't know what I did wrong, as every time I look at it over, it seems alright but I don't know. Could anyone let me know what I could do to fix this?

Please see the General Homebrew FAQ #Ω: (https://www.dndbeyond.com/forums/dungeons-dragons-discussion/homebrew-house-rules/131411-a-homebrewers-how-to-faq).

Thank you so much for the help, it still took me a while to fix it, but I managed to fix it.

Good, I’m glad. Happy to help.