Pasting preset settings darkens picture to complete black.

Hi guys. 

I found a very nice preset, that i have been applying to a lot of my images from a festival. 

For reasons unknown, i put down my work for a week, and now, when i borrow the preset from a picture i have applied to preset to, it completly darkens the picture as shown on the attached image. 

Can someone help me? Have i missed something, or is it something really obvious? 

Thankyou in advance. I have the newest version 6,4 lightroom cloud-based, i am on a macbook pro 16 inch 2019, OS Ventura.

Kind regards

Emil