VM8090 error in .net: Unable to load DLL 'K8090D.dll'

I am using a VM8090 in my ASP.NET application, when I was doing the development using debug mode in VS2017, it runs quite well… but when I come to publish the web to the same PC, it got error: “Unable to load DLL ‘K8090D.dll’: The specified module could not be found. (Exception from HRESULT: 0x8007007E)”.

ps: I add the reference “Velleman.Kits.dll” and
using Velleman.Kits;

Anyone can help me?