can someone please advise  here-

I am using the S3 service on the latest localstack version,and using the Amazon's S3 Java SDK to perform all the operations with Java 8 (Additional configuration info : aws-sdk-java/1.11.542 Windows_10/10.0 Java_HotSpot(TM)_64-Bit_Server_VM/25.60-b23 java/1.8.0_60 scala/2.10.5 groovy/2.4.10 vendor/Oracle_Corporation)

Although creating a new bucket seems to working as expected, retrieving the buckets via list buckets operation throws the following exception through the SDK:
```
 java.lang.IllegalArgumentException: Invalid format: "2019-12-23 05:12:26.039447" is malformed at " 05:12:26.039447"). Response Code: 200, Response Text: OK

response-

<ListAllMyBucketsResult xmlns="http://s3.amazonaws.com/doc/2006-03-01"><Owner><ID>bcaf1ffd86f41161ca5fb16fd081034f</ID><DisplayName>webfile</DisplayName></Owner><Buckets><Bucket><Name>tst-adapter-us-west-2</Name><CreationDate>2019-12-23 02:17:43.014814</CreationDate></Bucket></Buckets></ListAllMyBucketsResult>

trace-

Caused by:
        java.lang.IllegalArgumentException: Invalid format: "2019-12-23 05:12:26.039447" is malformed at " 05:12:26.039447"
            at org.joda.time.format.DateTimeParserBucket.doParseMillis(DateTimeParserBucket.java:187)
            at org.joda.time.format.DateTimeFormatter.parseMillis(DateTimeFormatter.java:826)
            at com.amazonaws.util.DateUtils.doParseISO8601Date(DateUtils.java:98)
            at com.amazonaws.util.DateUtils.parseISO8601Date(DateUtils.java:77)
            at com.amazonaws.services.s3.model.transform.XmlResponsesSaxParser$ListAllMyBucketsHandler.doEndElement(XmlResponsesSaxParser.java:996)
            at com.amazonaws.services.s3.model.transform.AbstractHandler.endElement(AbstractHandler.java:52)
            at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(AbstractSAXParser.java:609)
            at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanEndElement(XMLDocumentFragmentScannerImpl.java:1782)
            at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2973)
            at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:606)
            at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:117)
            at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:510)
            at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:848)
            at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:777)
            at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)
            at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1213)
            at com.amazonaws.services.s3.model.transform.XmlResponsesSaxParser.parseXmlInputStream(XmlResponsesSaxParser.java:152)
            ... 31 more
```
from localstack.config import HOSTNAME, HOSTNAME_EXTERNAL
from localstack.utils import persistence
from localstack.utils.aws import aws_stack
from localstack.utils.common import (
    short_uid, timestamp, TIMESTAMP_FORMAT_MILLIS, to_str, to_bytes, clone, md5, get_service_protocol)
from localstack.utils.analytics import event_publisher
from localstack.utils.aws.aws_responses import requests_response
from localstack.services.s3 import multipart_content
from localstack.services.generic_proxy import ProxyListener
S3_NOTIFICATIONS = {}
BUCKET_CORS = {}
BUCKET_LIFECYCLE = {}
BUCKET_REPLICATIONS = {}
BUCKET_ENCRYPTIONS = {}
OBJECT_LOCK_CONFIGS = {}
LOGGER = logging.getLogger(__name__)
XMLNS_S3 = 'http://s3.amazonaws.com/doc/2006-03-01/'
BUCKET_NAME_REGEX = (r'(?=^.{3,63}$)(?!^(\d+\.)+\d+$)' +
    r'(^(([a-z0-9]|[a-z0-9][a-z0-9\-]*[a-z0-9])\.)*([a-z0-9]|[a-z0-9][a-z0-9\-]*[a-z0-9])$)')
NOTIFICATION_DESTINATION_TYPES = ('Queue', 'Topic', 'CloudFunction', 'LambdaFunction')
OBJECT_METADATA_KEY_PREFIX = 'x-amz-meta-'
ALLOWED_HEADER_OVERRIDES = {
    'response-content-type': 'Content-Type',
    'response-content-language': 'Content-Language',
    'response-expires': 'Expires',
    'response-cache-control': 'Cache-Control',
    'response-content-disposition': 'Content-Disposition',
    'response-content-encoding': 'Content-Encoding',
}
def event_type_matches(events, action, api_method):