diff --git a/lib/wss.js b/lib/wss.js
index 2701d48..efd2974 100644
--- a/lib/wss.js
+++ b/lib/wss.js
@@ -79,7 +79,7 @@ const Wss = ({
                             for (const [id, conn] of this.connections) {
                                 if (message.params.connectionIds.indexOf(id) > -1) {
                                     this.dumper && this.dumper(encoded, connectionId);
-                                    this.connection(id).send(encoded);
+                                    this.connection(id)?.send(encoded);
                                 }
                             }
                         } else {
@@ -106,7 +106,7 @@ const Wss = ({
                         });
                         this.dumper && this.dumper(encoded, message.params.connectionId);
                         this.connection(message.params.connectionId)
-                            .send(encoded);
+                            ?.send(encoded);
                         const response = await rq.wait;
                         return response;
                     } catch (e) {
@@ -220,7 +220,7 @@ const Wss = ({
                         id: decoded.id
                     }, decoded);
                     this.dumper && this.dumper(encoded, connectionId);
-                    this.connection(connectionId).send(encoded);
+                    this.connection(connectionId)?.send(encoded);
                     // metrics
                     const ct = process.hrtime();
                     const f  = ct[0] - response.meta.passTrough.time[0];
@@ -236,6 +236,9 @@ const Wss = ({
         }
         refreshConnection(id, connection) {
             const existing = this.connections.get(id);
+            if (!existing && !connection) {
+                return;
+            }
             if (existing?.timeOut) {
                 clearTimeout(existing.timeOut);
                 if (!connection) { // update only timeout
@@ -261,7 +264,7 @@ const Wss = ({
         }
         connection(id) {
             this.refreshConnection(id);
-            return this.connections.get(id).connection;
+            return this.connections.get(id)?.connection;
         }
         async connect() {
             return await (new Promise((resolve, reject) => {