catch 住异常，防止这一块死循环

designer-base/src/main/java/com/fr/env/detect/thowable/ThrowableLogAppender.java

@@ -32,12 +32,15 @@ public class ThrowableLogAppender extends AbstractAppender {
     
     @Override
     public void append(LogEvent logEvent) {
-        
-        if (logEvent.getLevel() == Level.ERROR) {
-            Throwable thrown = logEvent.getThrown();
-            if (thrown != null) {
-                ThrowableStore.getInstance().add(thrown);
+    
+        try {
+            if (logEvent.getLevel() == Level.ERROR) {
+                Throwable thrown = logEvent.getThrown();
+                if (thrown != null) {
+                    ThrowableStore.getInstance().add(thrown);
+                }
             }
+        } catch (Throwable ignore) {
         }
     }