C# 在DLL中找不到名为XXX的入口点

我不知道我的解决方案发生了什么，我只是改变了一些设计问题，然后我得到了以下异常

   Error Message:Unable to find an entry point named 'pdfGetNamedDestCount' in DLL 'RadPdfD.dll'.
   Stack Trace:
   at #qb.#nd.#Nz(IntPtr IPDF)
   at #qb.#nd.#rz()
   at #3B.#4B.#8B(#nd p)
   at #3B.#4B..ctor(PdfDocument parentDocument, #nd p)
   at RadPdf.Data.Document.PdfDocument.#Nq(Double dpi, #nd p)
   at #St.#1.#Rf(Byte[] pdfData, String pdfPassword, Byte[] appendData, String appendPassword)
   at #St.#1.#Rf(Byte[] pdfData, String pdfPassword)
   at #St.#1.#Pf(#5 database, #4 settings, Byte[] pdfData, String pdfPassword)
   at RadPdf.Web.UI.PdfWebControl.CreateDocument(#5 database, String documentFileName, Byte[] documentData, PdfDocumentSettings documentSettings, String documentPassword, Byte[] documentComparisonData)
   at RadPdf.Web.UI.PdfWebControl.CreateDocument(String documentFileName, Byte[] documentBinary, PdfDocumentSettings documentSettings, String documentPassword)
   at RadPdf.Web.UI.PdfWebControl.CreateDocument(String documentFileName, Byte[] documentBinary, PdfDocumentSettings documentSettings)
   at RadPdf.Web.UI.PdfWebControl.CreateDocument(String documentFileName, Byte[] documentBinary)

我在web应用程序中用作第三方

它在服务器上运行良好，但我在本地收到此错误