Error 404 on article when sharing on facebook

hi folks, i'll like your plugin because he's fast, i can purchase it on 11.18.2020 but i face an error at this time,

sharing the article on facebook, gave a 404 error, we use route66 and some sef plugin, but she dont have to enter in conflict

can you have a look, the share button is at the bottom of the page, all css and other optimisation are off, that not the bug,

thanks a lot,

f.

То же самое... Ошибка 404 Категория не найдена