404 Error Listing Detail Page

[www.HDsports.at]

Hi,

i get on following listing detail page an 404 Error

https://www.hdsports.at/berg/monteneu

when i change the alias of the listing detail page to "monteneu2", than the link with montenea2 works.

But when i change the alias back to monteneu than i alwas get the error 404. I also have no other article with the alias monteneu, so i dont unterstand why i get this error. When i search on my site for monteneu, i get in the search results also only this one result with link to 404 error.

Best regards, tom

[Alejandro]

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