Prompt issue

Hello civitai, can anyone of you help me on a simple problem? I noticed everytime I generate a photo i have random people in it, when I specifically say solo, take https://civitai.com/posts/30980487 for example. I even put people in a negative prompt. I don't know why it won't act right, I'm sick of seeing other people in my photos. I've tried removing things from my prompt I still see another person.