diff -ru libserializer-1.1.2.orig/source/org/pentaho/reporting/libraries/serializer/SerializerHelper.java libserializer-1.1.2/source/org/pentaho/reporting/libraries/serializer/SerializerHelper.java
--- libserializer-1.1.2.orig/source/org/pentaho/reporting/libraries/serializer/SerializerHelper.java	2021-04-07 11:22:05.509434457 +0100
+++ libserializer-1.1.2/source/org/pentaho/reporting/libraries/serializer/SerializerHelper.java	2021-04-07 11:23:19.102343782 +0100
@@ -25,8 +25,7 @@
 import java.util.HashMap;
 import java.util.Iterator;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
+import java.util.logging.Logger;
 import org.pentaho.reporting.libraries.base.config.Configuration;
 import org.pentaho.reporting.libraries.base.util.ObjectUtilities;
 import org.pentaho.reporting.libraries.base.util.DebugLog;
@@ -41,7 +40,7 @@
  */
 public class SerializerHelper
 {
-  private static final Log logger = LogFactory.getLog(SerializerHelper.class);
+  private static final Logger logger = Logger.getLogger(SerializerHelper.class.getName());
   /**
    * The singleton instance of the serialize helper.
    */
@@ -124,7 +123,7 @@
       }
       else
       {
-        logger.warn("Invalid SerializeMethod implementation: " + c);
+        logger.warning("Invalid SerializeMethod implementation: " + c);
       }
     }
   }