diff --git a/flink-doris-connector/src/main/java/org/apache/doris/flink/serialization/RowBatch.java b/flink-doris-connector/src/main/java/org/apache/doris/flink/serialization/RowBatch.java
index dd49120f7..38c63b779 100644
--- a/flink-doris-connector/src/main/java/org/apache/doris/flink/serialization/RowBatch.java
+++ b/flink-doris-connector/src/main/java/org/apache/doris/flink/serialization/RowBatch.java
@@ -348,9 +348,9 @@ public boolean doConvert(
                     addValueToRow(rowIndex, dateTime);
                 } else {
                     logger.error(
-                            "Unsupported type for DATETIME, minorType {}, vector {}",
+                            "Unsupported type for DATETIME, minorType {}, class is {}",
                             minorType.name(),
-                            fieldVector);
+                            fieldVector == null ? null : fieldVector.getClass());
                     return false;
                 }
                 break;
@@ -370,9 +370,9 @@ public boolean doConvert(
                     addValueToRow(rowIndex, dateTime);
                 } else {
                     logger.error(
-                            "Unsupported type for DATETIMEV2, minorType {}, vector {}",
+                            "Unsupported type for DATETIMEV2, minorType {}, class is {}",
                             minorType.name(),
-                            fieldVector);
+                            fieldVector == null ? null : fieldVector.getClass());
                     return false;
                 }
                 break;
diff --git a/flink-doris-connector/src/test/java/org/apache/doris/flink/serialization/TestRowBatch.java b/flink-doris-connector/src/test/java/org/apache/doris/flink/serialization/TestRowBatch.java
index 8a552a7e3..3d9ac2617 100644
--- a/flink-doris-connector/src/test/java/org/apache/doris/flink/serialization/TestRowBatch.java
+++ b/flink-doris-connector/src/test/java/org/apache/doris/flink/serialization/TestRowBatch.java
@@ -1333,12 +1333,23 @@ public void testDoConvert() throws Exception {
         flag = rowBatch.doConvert(1, 1, Types.MinorType.INT, "DATETIME", null);
         Assert.assertFalse(flag);
 
+        flag = rowBatch.doConvert(1, 1, Types.MinorType.TIMESTAMPSEC, "DATETIME", null);
+        Assert.assertFalse(flag);
+
+        IntVector intVector1 = new IntVector("test", new RootAllocator(Integer.MAX_VALUE));
+        intVector1.setNull(0);
+        flag = rowBatch.doConvert(1, 1, Types.MinorType.TIMESTAMPSEC, "DATETIME", intVector1);
+        Assert.assertFalse(flag);
+
         flag = rowBatch.doConvert(1, 1, Types.MinorType.INT, "DATETIMEV2", null);
         Assert.assertFalse(flag);
 
         flag = rowBatch.doConvert(1, 1, Types.MinorType.TIMESTAMPSEC, "DATETIMEV2", null);
         Assert.assertFalse(flag);
 
+        flag = rowBatch.doConvert(1, 1, Types.MinorType.TIMESTAMPSEC, "DATETIMEV2", intVector1);
+        Assert.assertFalse(flag);
+
         flag = rowBatch.doConvert(1, 1, Types.MinorType.INT, "LARGEINT", null);
         Assert.assertFalse(flag);