Creating an add-on "product type book" for ZC 1.5

[fjbern1943]

When you run the install from the admin or from the URL, what is the exact error? Does it tell you which file is not found? The install is not a file itself, it is built into the admin.

Here is the error message:
HTTP 500 error

That's odd... Microsoft Edge can’t find this page

This page can’t be displayed, because this site’s server might be under maintenance or there could be a programming error.

Using chrome I get this error:
WARNING: An Error occurred, please refresh the page and try again. Did you see the error Log info I posted?