diff --git a/server/src/main/java/org/eclipse/jifa/server/ReadyListener.java b/server/src/main/java/org/eclipse/jifa/server/ReadyListener.java
index 0e702961..9968a9a7 100644
--- a/server/src/main/java/org/eclipse/jifa/server/ReadyListener.java
+++ b/server/src/main/java/org/eclipse/jifa/server/ReadyListener.java
@@ -39,8 +39,11 @@ class ReadyListener extends ConfigurationAccessor {
 
     @EventListener(ApplicationReadyEvent.class)
     public void fireReadyEvent() {
-        //noinspection HttpUrlsUsage
-        log.info("Jifa Server: http://{}:{}", "localhost", config.getPort());
+        Role role = config.getRole();
+        if (role == Role.MASTER || role == Role.STANDALONE_WORKER) {
+            //noinspection HttpUrlsUsage
+            log.info("Jifa Server: http://{}:{}", "localhost", config.getPort());
+        }
 
         if (config.getRole() == Role.STANDALONE_WORKER) {
             Path[] paths = config.getInputFiles();
diff --git a/server/src/main/java/org/eclipse/jifa/server/domain/converter/AnalysisApiStompResponseMessageConverter.java b/server/src/main/java/org/eclipse/jifa/server/domain/converter/AnalysisApiStompResponseMessageConverter.java
index b700bd3a..72eafbe0 100644
--- a/server/src/main/java/org/eclipse/jifa/server/domain/converter/AnalysisApiStompResponseMessageConverter.java
+++ b/server/src/main/java/org/eclipse/jifa/server/domain/converter/AnalysisApiStompResponseMessageConverter.java
@@ -76,6 +76,9 @@ private static byte[] toData(Object o) {
         if (o == null) {
             return Constant.EMPTY_BYTE_ARRAY;
         }
+        if (o instanceof byte[] bs) {
+           return bs;
+        }
         try {
             return GsonHolder.GSON.toJson(o).getBytes(Constant.CHARSET);
         } catch (Throwable t) {