FOSS gamedev and creative worlds

How can I get rid of this error from mods I removed? Are they there because I have nodes created through the mods in the world? Maybe dependencies I've forgotten? Just trying to clean it up... do I need to start from scratch?

Thanks in advance for reading the question! We love Minetest!

Update - I am deleting the mods from the world.mt file and it seems to work, but is this the best way to do that?

I'm pretty sure I caused the errors by removing mods without first disabling them in the game.