Fix bug.

app/views/admin/announcements/import.html.erb

@@ -119,7 +119,7 @@
         var finish_percent = data["finish_percent"];
         var current_count = data["current_count"];
         var all_count = data["all_count"];
-        var is_finish = (data["status"] == "finish" || data["status"] == "error");
+        var is_finish = ((data["status"] == "finish" && data["filename"]) || data["status"] == "error");
         var info = data["info"]
         if(finish_percent){
           $("#threadModal .modal-body .thread-status").text(data["status"]);