Wedding cake AF failed germination

Seed failed to germinate. I saw a little green peeking out of the FF warrior seedling soil, then it starting turning brown. I keep her inside my green house during the day, then bring her in at night and provide a regular led lamp for approx 4-5 hours. What could I be doing wrong? I have had so many issues with my seeds and dead seedlings purchased from ILGM.

Looks as if the soil got very wet and compacted. That with a over wet seedling it can’t push through

Thank You For the quick response. Is she a goner, or is there Anything i am able to do to help her pull through?