Cant get trix to store anything into the DB

[HakuTq]

I've tried to follow the tutorial in the documentation to the best of my abilities, but for some reason i always end up getting an error, which is: table study_materials has no column named post-trixFields

My form with trix:

StudyMaterial model:

StudyMaterial controller:

Maybe I'm just dumb, thanks for advice in advance.