added error log for exception while reading time.

lib/src/kdbx_xml.dart

@@ -10,6 +10,10 @@ import 'package:kdbx/src/kdbx_consts.dart';
 import 'package:meta/meta.dart';
 import 'package:xml/xml.dart';
 
+import 'package:logging/logging.dart';
+
+final _logger = Logger('kdbx_xml');
+
 class KdbxXml {
   static const NODE_STRING = 'String';
   static const NODE_KEY = 'Key';
@@ -250,6 +254,7 @@ class DateTimeUtcNode extends KdbxSubTextNode<DateTime> {
     if (value == null) {
       return null;
     }
+    try {
       if (value.contains(':')) {
         return DateTime.parse(value);
       }
@@ -261,6 +266,11 @@ class DateTimeUtcNode extends KdbxSubTextNode<DateTime> {
       return DateTime.fromMillisecondsSinceEpoch(
           (secondsFrom00 - EpochSeconds) * 1000,
           isUtc: true);
+    } catch (e, stackTrace) {
+      _logger.severe(
+          'Error while parsing time for {$name}: {$value}', e, stackTrace);
+      rethrow;
+    }
   }
 
   @override