Feeling dejected after messing up a presentation at work

I'm doing an internship right now in data science that lets me exercise my programing skills. I had 3 job offers but chose this because it seemed to be the most challenging one. However, I just had a presentation at work where I had to present my analysis and I messed up. A senior executive pointed out a major flaw in my analysis and I feel ashamed that I din't notice that earlier. It's my first month here and I …

analysis data data science datascience exercise internship job presentation programing science skills work