As I’ve changed and simplified my site recently (16 Aug ’19), there are quite a few of old links which don’t point to anything anymore.
As the old images are simply not on the site anymore it can’t be helped. All I can do is offer apologies and hope that you would enjoy browsing the collections mentioned in the portfolio menu.
While working with WordPress I’ve also written a number of plugins. Those are supporter through the WordPress plugin site. But of course, you can also leave a message here on the contact page.