fix

xim/xim.ts

@@ -48,12 +48,13 @@ export class Xim {
             if (this.client.connected) {
                 this.client.close();
             }
-
+            if (this.client) {
                 this.client.onconnected = emptyFunc;
                 this.client.onmsg = emptyFunc;
                 this.client = undefined;
             }
         }
+    }
 
     private connectionPending = false
 
@@ -64,6 +65,7 @@ export class Xim {
             this.close();
 
             token().then((t) => {
+                if (!t) return;
                 const client = new XChatClient(url, this.trimToken(t));
                 this.client = client;