When Google shows stale info, clearing it depends on who owns the page. If you...

https://page-wiki.win/index.php/My_Site_Shows_a_Custom_Not_Found_Page:_How_Do_I_Make_Sure_It_Returns_a_404%3F

When Google shows stale info, clearing it depends on who owns the page. If you control the site, ensure the page returns a true 404 error and use the "Removals" tool in Search Console for a quick wipe