diff --git a/diagnostic/server.js b/diagnostic/server.js
index 9275b62..3686d4a 100644
--- a/diagnostic/server.js
+++ b/diagnostic/server.js
@@ -509,17 +509,20 @@ function connectRVS(forcePlain) {
 }
 
 function sendToRVS(text, isPipeline) {
+  log("info", "rvs", `sendToRVS: rvsWs=${rvsWs ? 'exists' : 'null'}, readyState=${rvsWs ? rvsWs.readyState : 'N/A'}, OPEN=${WebSocket.OPEN}`);
   if (!rvsWs || rvsWs.readyState !== WebSocket.OPEN) {
-    log("error", "rvs", "Nicht verbunden");
+    log("error", "rvs", `Nicht verbunden (readyState: ${rvsWs ? rvsWs.readyState : 'null'})`);
     if (isPipeline) pipelineEnd(false, "RVS nicht verbunden");
     return false;
   }
 
-  rvsWs.send(JSON.stringify({
+  const msg = JSON.stringify({
     type: "chat",
     payload: { text, sender: "diagnostic" },
     timestamp: Date.now(),
-  }));
+  });
+  log("info", "rvs", `Sende ${msg.length} bytes an RVS...`);
+  rvsWs.send(msg);
   log("info", "rvs", `Gesendet via RVS: "${text}"`);
   if (isPipeline) plog(`Nachricht an RVS gesendet — warte auf Antwort via RVS...`);
   return true;