diff --git a/jans-core/service/src/main/java/io/jans/service/logger/LoggerService.java b/jans-core/service/src/main/java/io/jans/service/logger/LoggerService.java
index 10df13f7e57..8c43be36d22 100644
--- a/jans-core/service/src/main/java/io/jans/service/logger/LoggerService.java
+++ b/jans-core/service/src/main/java/io/jans/service/logger/LoggerService.java
@@ -29,7 +29,25 @@
 
 /**
  * Logger service
+ * At startup of any server (FIDO2, jans-auth, casa etc)
+ * LoggerService is initialized inside the Application Initializer
+ * (AppInitializer) class for the respective server.
+ *  
+ * In the server configuration for each application fido2, jans-auth,casa etc,
+ * you can change the log level and the same is reflected in the corresponding
+ * log level database entry
+ * 
+ * And this service/timer will update log level in all created loggers
+ * 
+ * There are 2 limitations of this Timer
+ * 
+ * 1. It updates log level only after server startup. First time it does this
+ * after 15 seconds delay. 2. It can update logging level only after
+ * instantiating loggers. This means that if no one call specific service with
+ * own logger this logger will be not created But after first call logger timer
+ * will update it level as well
  *
+ * 
  * @author Yuriy Movchan Date: 08/19/2018
  */
 public abstract class LoggerService {
diff --git a/jans-fido2/server/src/main/java/io/jans/fido2/service/mds/AttestationCertificateService.java b/jans-fido2/server/src/main/java/io/jans/fido2/service/mds/AttestationCertificateService.java
index dc7ba20152e..cc09d6de4e7 100644
--- a/jans-fido2/server/src/main/java/io/jans/fido2/service/mds/AttestationCertificateService.java
+++ b/jans-fido2/server/src/main/java/io/jans/fido2/service/mds/AttestationCertificateService.java
@@ -84,16 +84,19 @@ public void init(@Observes @ApplicationInitialized(ApplicationScoped.class) Obje
 	public List<X509Certificate> getAttestationRootCertificates(JsonNode metadataNode,
 			List<X509Certificate> attestationCertificates) {
 		JsonNode metaDataStatement = null;
-		try {
-			metaDataStatement = dataMapperService.readTree(metadataNode.get("metadataStatement").toPrettyString());
-		} catch (IOException e) {
-			log.error("Error parsing the metadata statement", e);
+		// incase of u2f-fido2 attestation
+		if (metadataNode != null) {
+			try {
+				metaDataStatement = dataMapperService.readTree(metadataNode.get("metadataStatement").toPrettyString());
+			} catch (IOException e) {
+				log.error("Error parsing the metadata statement", e);
+			}
 		}
 
-		if (metaDataStatement == null || !metaDataStatement.has("attestationRootCertificates")) {
+		if (metadataNode == null || metaDataStatement == null
+				|| !metaDataStatement.has("attestationRootCertificates")) {
 			List<X509Certificate> selectedRootCertificate = certificateService
 					.selectRootCertificates(rootCertificatesMap, attestationCertificates);
-
 			return selectedRootCertificate;
 		}
 
diff --git a/jans-fido2/server/src/main/resources/log4j2.xml b/jans-fido2/server/src/main/resources/log4j2.xml
index bdbea76c1a8..144d998c690 100644
--- a/jans-fido2/server/src/main/resources/log4j2.xml
+++ b/jans-fido2/server/src/main/resources/log4j2.xml
@@ -32,11 +32,7 @@
 		<!-- ############### Gluu ################# -->
 		<Logger name="org.gluu" level="${log4j.default.log.level}" />
 
-        <Logger name="io.jans.fido2" level="INFO">
-            <AppenderRef ref="FILE" />
-        </Logger>
-
-		<Logger name="org.gluu.site.ldap" level="${log4j.default.log.level}" additivity="false">
+        <Logger name="org.gluu.site.ldap" level="${log4j.default.log.level}" additivity="false">
 			<AppenderRef ref="PERSISTENCE_FILE" />
 		</Logger>