philippowell on "[Plugin: WP Staging - DB & File Duplicator & Migration] Fail internal server error"

I have read the FAQ but I am stuck on 2% for Copy database tables - "Fail - Internal Server Error"
I get nothing in the working log window
I have tried various fixes: disabling all plugins, adjusting WPstaging settings, clearing caches on server and browser, reinstalling the WP core files on the server and now I am out of ideas other than removing the plugin files and starting over. :(

https://wordpress.org/plugins/wp-staging/