diff --git a/AyCode.Core.Server/Loggers/GlobalLogger.cs b/AyCode.Core.Server/Loggers/GlobalLogger.cs
index 17eb119..47706a9 100644
--- a/AyCode.Core.Server/Loggers/GlobalLogger.cs
+++ b/AyCode.Core.Server/Loggers/GlobalLogger.cs
@@ -25,7 +25,7 @@ namespace AyCode.Core.Server.Loggers
 
 
         public static List<IAcLogWriterBase> GetWriters => Instance._logger.GetWriters;
-        public static TLogWriter Writer<TLogWriter>() where TLogWriter : IAcLogWriterBase => Instance._logger.Writer<TLogWriter>();
+        public static TLogWriter? Writer<TLogWriter>() where TLogWriter : IAcLogWriterBase => Instance._logger.Writer<TLogWriter>();
 
 
         public static void Detail(string? text, string? categoryName = null, [CallerMemberName] string? memberName = null) 
diff --git a/AyCode.Core/Loggers/AcLoggerBase.cs b/AyCode.Core/Loggers/AcLoggerBase.cs
index 2f345a4..0ecbac6 100644
--- a/AyCode.Core/Loggers/AcLoggerBase.cs
+++ b/AyCode.Core/Loggers/AcLoggerBase.cs
@@ -48,7 +48,7 @@ public abstract class AcLoggerBase : IAcLoggerBase
     }
 
     public List<IAcLogWriterBase> GetWriters => [.. LogWriters];
-    public TLogWriter Writer<TLogWriter>() where TLogWriter : IAcLogWriterBase => LogWriters.OfType<TLogWriter>().First();
+    public TLogWriter? Writer<TLogWriter>() where TLogWriter : IAcLogWriterBase => LogWriters.OfType<TLogWriter>().FirstOrDefault();
 
     public virtual void Detail(string? text, string? categoryName = null, [CallerMemberName] string? memberName = null)
     {
diff --git a/AyCode.Core/Loggers/IAcLoggerBase.cs b/AyCode.Core/Loggers/IAcLoggerBase.cs
index 84893ab..16a5715 100644
--- a/AyCode.Core/Loggers/IAcLoggerBase.cs
+++ b/AyCode.Core/Loggers/IAcLoggerBase.cs
@@ -3,5 +3,5 @@
 public interface IAcLoggerBase : IAcLogWriterBase
 {
     public List<IAcLogWriterBase> GetWriters { get; }
-    public TLogWriter Writer<TLogWriter>() where TLogWriter : IAcLogWriterBase;
+    public TLogWriter? Writer<TLogWriter>() where TLogWriter : IAcLogWriterBase;
 }
\ No newline at end of file