搭建一个新的iis web服务器，报错如下，求解？

day_free 2021-11-17 16:45:47

Server Error in '/service' Application.

Could not load file or assembly 'PDFlib_dotnet.DLL' or one of its dependencies. The specified module could not be found.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.IO.FileNotFoundException: Could not load file or assembly 'PDFlib_dotnet.DLL' or one of its dependencies. The specified module could not be found.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:


[FileNotFoundException: Could not load file or assembly 'PDFlib_dotnet.DLL' or one of its dependencies. The specified module could not be found.]
   System.Reflection.RuntimeAssembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks) +0
   System.Reflection.RuntimeAssembly.nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks) +36
   System.Reflection.RuntimeAssembly.InternalLoadAssemblyName(AssemblyName assemblyRef, Evidence assemblySecurity, RuntimeAssembly reqAssembly, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks) +347
   System.Reflection.RuntimeAssembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean forIntrospection) +83
   System.Reflection.RuntimeAssembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection) +22
   System.Reflection.Assembly.Load(String assemblyString) +29
   System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String assemblyName, Boolean starDirective) +38

[ConfigurationErrorsException: Could not load file or assembly 'PDFlib_dotnet.DLL' or one of its dependencies. The specified module could not be found.]
   System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String assemblyName, Boolean starDirective) +622
   System.Web.Configuration.CompilationSection.LoadAllAssembliesFromAppDomainBinDirectory() +196
   System.Web.Configuration.CompilationSection.LoadAssembly(AssemblyInfo ai) +45
   System.Web.Configuration.AssemblyInfo.get_AssemblyInternal() +25
   System.Web.Compilation.BuildManager.GetReferencedAssemblies(CompilationSection compConfig) +176
   System.Web.Compilation.BuildManager.GetPreStartInitMethodsFromReferencedAssemblies() +85
   System.Web.Compilation.BuildManager.CallPreStartInitMethods(String preStartInitListPath, Boolean& isRefAssemblyLoaded) +111
   System.Web.Compilation.BuildManager.ExecutePreAppStart() +119
   System.Web.Hosting.HostingEnvironment.Initialize(ApplicationManager appManager, IApplicationHost appHost, IConfigMapPathFactory configMapPathFactory, HostingEnvironmentParameters hostingParameters, PolicyLevel policyLevel, Exception appDomainCreationException) +692

[HttpException (0x80004005): Could not load file or assembly 'PDFlib_dotnet.DLL' or one of its dependencies. The specified module could not be found.]
   System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +601
   System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +78
   System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +166

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.7.3770.0

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