Filter Processing Error

???E:\Filter.NET2632626\bin\LogFiles\refercc-2026-01-14.log???????????????????????

Description: An unhandled exception occurred during the processing of a filter notification. Please review the stack trace for more information about the error and where it originated in the code.

Event Details:
   Event: PreProcHeaders
   Instance: KodeIT.Web.Samples.ServerHeaderChange, KodeIT.Web.Samples, Version=1.2.9364.31466, Culture=neutral, PublicKeyToken=null

Process Details:
   Id: 432
   Name: w3wp.exe
   Account: NT AUTHORITY\NETWORK SERVICE

Exception Details: IOException: ???E:\Filter.NET2632626\bin\LogFiles\refercc-2026-01-14.log???????????????????????

Stack Trace: 


   ? System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
   ? System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy)
   ? System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options)
   ? System.IO.StreamWriter.CreateFile(String path, Boolean append)
   ? System.IO.StreamWriter..ctor(String path, Boolean append, Encoding encoding, Int32 bufferSize)
   ? System.IO.StreamWriter..ctor(String path, Boolean append, Encoding encoding)
   ? KodeIT.Web.Samples.Function.OnLog(String logstr, String prefix)
   ? KodeIT.Web.Samples.ServerHeaderChange.OnPreProcHeaders(Object sender, PreProcHeadersEventArgs e)
   ? KodeIT.Web.InstanceEvents.OnPreProcHeaders(PreProcHeadersEventArgs e)
   ? KodeIT.Web.Hosting.ProxyInstance.KodeIT.Web.Hosting.IProxyInstance.OnPreProcHeaders(IProxySession session, IntPtr contextPtr, IntPtr eventPtr, FilterEvent eventType)

Version Information: Filter.NET Framework Version: 1.0.1.0; .NET Version: v2.0.50727