'fix'

src/Services/Channel/ChannelService.php

@@ -26,8 +26,7 @@ class ChannelService
             $channel_user_id = DB::connection('mysql')->table('channel_users')->where(['phone'=>$phone])->pluck('id')->all();
             \Log::info('channel_user_id: '.json_encode($channel_user_id, 256));
             if ($channel_user_id) {
-                $channel_user_ids = array_merge($channel_user_ids, $channel_user_id);
-                \Log::info('channel_user_ids_merge: '.json_encode($channel_user_ids, 256));
+                $channel_user_ids = $channel_user_id;
             }
         }