02M relationship errors

Hello Guys, Im new to this community and directus as well, and it seems pretty and good but i can`t find out how to work with relationships.

What do i need ?

I want to to have a Model that has "skills" in it, just ID and Name attributes. And the Projects model, where i can choose which skills are part of the project. So i created a model with attribute "name" as input, and in projects i choose 02M relationship, and it gives me error in the page of a project, when i scroll to the "skills", it just says that an error happend and that`s all. Can someone help me with this or give me a link where i can read how to do those relationships?