Cannot load the content in gallery

It does not work. When trying to display a gallery on frontend, there is a “The page not found.” page. The address in the URL is redirected to another page when I click on a gallery something from https://localhost/my_page/ to https://localhost/wp-plugintest/tm_pg_set/aaa/.

If I used only plain images (without using albums and sets), those images get displayed and get opened correctly when clicked on.

I need to categorize my images into albums (different events on different days) and show on a page, which user will be able to open the album to see each event’s photos.

Can you please help me?

The page I need help with: [log in to see the link]