Graphics, Figures & Tables ⇒ png files not found in Texshop 5.47

[Frank Uhlig]

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 either location my graphics files always are not findable when compiling the pdf.
Is that a Latex problem or one with both "cloud" services Box and OneDrive.

Thanks for any hints. I have successfully created imaged pdf files there that I compiled months ago in the same set-ups. So what may have happened in the recent months? And how can I repair this current issue?

Thanks, Frank

[Frank Uhlig]

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.

[Frank Uhlig]

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

[Frank Uhlig]

Maybe it is just my chosen documentclass as "seminar" and this is , has been abandoned, is obsolete and I should switch to "article class?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,amssymb}
\usepackage[english]{babel}

\usepackage{graphicx}
\usepackage{xypic}
\usepackage{xcolor}{\ignorespacesafterend}

\usepackage{tikz}
\usetikzlibrary{arrows}

Or the pdf sideways printing command lines

\pdfpagewidth=11in % PRINT from Adobe Reader !!!!!!!!!!!!!!!!!!!!!!
\pdfpageheight=8.5in

O R it is just Box who does need permission to look for or use graphics files sitting in the same a folder as the tex file before using them. I will have to ask Box for expert help now. And I do not know any answers to this quagmire of nonsense. Can You help?
Thanks again.