diff --git a/ex5.5.py b/ex5.5.py
new file mode 100644
index 0000000..012ef2a
--- /dev/null
+++ b/ex5.5.py
@@ -0,0 +1,6 @@
+import logging
+
+from reader import read_csv_as_dicts
+
+logging.basicConfig(level=logging.DEBUG)
+port = read_csv_as_dicts("Data/missing.csv", types=[str, int, float])
diff --git a/reader.py b/reader.py
index 1082957..9b7c465 100644
--- a/reader.py
+++ b/reader.py
@@ -1,4 +1,5 @@
 import csv
+import logging
 from typing import Any, Callable, Iterable, Mapping, Optional, Sequence
 
 
@@ -10,7 +11,15 @@ def convert_csv(
     rows = csv.reader(lines)
     if headers is None:
         headers = next(rows)
-    records = list(map(lambda row: conv(row, headers), rows))
+    records = []
+    for n, row in enumerate(rows):
+        try:
+            records.append(conv(row, headers))
+        except ValueError as ex:
+            log = logging.getLogger(__name__)
+            log.warning(f"Row {n}: bad row: {row}")
+            log.debug(f"Reason: {ex}")
+
     return records