[แก้ไขแล้ว] problem with excursion translations, error 404

Contesto del problema:
I am trying to view the excursion page in Italian on my site ลิงค์ที่ซ่อนอยู่. The English version of the page is accessible at ลิงค์ที่ซ่อนอยู่.

Sintomi:
The Italian version of the excursion page gives an error 404.

Domande:
How come I see the excursion in English but not in Italian?
Can you solve the error 404 issue for the Italian page?