I just learned that the Fraunhofer line of the Sun indicates that the Sun have various elements other than just hydrogen and helium, for example, Na and Fe [Fraunhofer line on wikipedia]https://en.wikipedia.org/wiki/Fraunhofer_lines#:~:text=In%20physics%20and%20optics%2C%20the,the%20Sun%20(white%20light)%20., but isn't the Sun only have pp chain reaction that only involve hydrogen and helium? So where do these other elements came from?

Thank you in advance!

I just learned that the Fraunhofer lines of the Sun's spectrum indicate that the Sun contains various elements other than just hydrogen and helium (for example, Na and Fe) but don't the Sun's p-p chain reactions only involve hydrogen and helium? So where do these other elements came from?