diff --git a/bricks/llm.js b/bricks/llm.js
index 1781b10..54a66c7 100644
--- a/bricks/llm.js
+++ b/bricks/llm.js
@@ -259,27 +259,25 @@ bricks.LlmModel = class extends bricks.JsWidget {
 	}
 	async query_task_status(mout, taskid){
 		var pt = this.opts.period_time || 50;
-		if (this.query_task) {
-			this.query_task.cancel()
+		while (true) {
+			var hj = new bricks.HttpJson()
+			var d = {
+				taskid: taskid
+			}
+			var resp = await hj.post(this.opts.query_url, {params:d});
+			if (! resp) {
+				return;
+			}
+			mout.update_data(resp)
+			if (resp.status != 'ok'){
+				console.log('error:' + resp.data.message);
+			}
+			var data = resp.data.response
+			if (data.status == 'FAILED' || data.status == 'SUCCEEDED'){
+				return
+			}
+			mout.update_data(data);
 		}
-		var hj = new bricks.HttpJson()
-		var d = {
-			taskid: taskid
-		}
-		var resp = await hj.post(this.opts.query_url, {params:d});
-		if (! resp) {
-			return;
-		}
-		mout.update_data(resp)
-		if (resp.status != 'ok'){
-			console.log('error:' + resp.data.message);
-		}
-		var data = resp.data.response
-		if (data.status == 'FAILED' || data.status == 'SUCCEEDED'){
-			return
-		}
-		mout.update_data(data);
-		schedule_once(this.query_task_status.bind(this, mout, taskid), pt)
 	}
 	chunk_response(mout, l){
 		l = l.trim();
diff --git a/bricks/utils.js b/bricks/utils.js
index 0151076..6b0efc6 100644
--- a/bricks/utils.js
+++ b/bricks/utils.js
@@ -1,5 +1,9 @@
 var bricks = window.bricks || {};
 bricks.bug = false;
+bricks.sleep = function(seconds){
+	var ms = seconds * 1000;
+	return new Promise(resolve => setTimeout(resolve, ms));
+}
 
 bricks.timeDiff = function(startTime) {
   const now = Date.now();