I doubt this is caused by NuWiki. Since you have posted the same question in the NuSEO support forum, I assume this is a NuSEO support question. Please confirm.
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Unfortunately, the developer has disappeared last year. There is no official support for NuHit products. Some products no longer work.
Although I am not part of Nuhit staff, I will support/advise customers where I can and moderate the NuHit forums. Please read more information
here.