fixed

digital_doctor/application/api/logic/TychatLogic.php

@@ -153,6 +153,11 @@ class TychatLogic extends BaseLogic
             ->where('username',$username)
             ->where('clientid','neq',$client_id)
             ->select();
+        if(empty($arr)){
+            $json = Tools::wss_json_fail($action, '没有找到广播对象，请绑定设备');
+            return Gateway::sendToClient($client_id, $json);
+        }
+
         $clientid_arr = array_column($arr,'clientid');