LaTeX.org

Maybe it is just my chosen documentclass as "seminar" and this is , has been abandoned, is obsolete and I should switch to "article class?

\documentclass[10pt]{seminar}
\usepackage{color,times,amsmath,amsfonts,latexsym,epsf,colordvi,epsfig,graphics,verbatim,colordvi}
\usepackage{url,hyperref ...

I forgot the console report lines for not finding the png file ...

Here are the screen shots of the tex file, the pdf file and the log files of the troublesome graphic file not found:

Well, I am trying to attach relevant screenshots of my Box folder, my tex file and the pdf output, and I did just see how to attach files here. Great.

All info on "png etc graphics files not found in the same folder as the Latex file" are decades old.
But today I cannot insert graphic files into my Latex 2e source code in Texshop. Both the tex and png or jpeg or ... files sit in the same folder on Box or OneDrive where I edit and compile and in ...