We saw another downside of nuclear power in Ukraine: When Russian troops attacked towards Enerhodar and there was shelling in the area the safety of the reactor could not be guaranteed. In the end, containment can be guaranteed w.r.t to internal accidents but no facility can ever be safe from outside issues like war, natural disaster or politics.
Solar has less single points of failure and if it fails not much happens, like in the case of the stolen solar power plant (https://en.wikipedia.org/wiki/Tokmak_Solar_Energy).