fix error

app/views/admin/asks/email.html.erb

@@ -5,7 +5,7 @@
 	</head>
 	<body>
 		<p>
-			<%= @data['reply'].gsub(/[(\n)(\r)]/, "\n" => "<br/>", "\r" => "" ).html_safe %>
+			<%= @data['reply'].to_s.gsub(/[(\n)(\r)]/, "\n" => "<br/>", "\r" => "" ).html_safe %>
 		</p>
 		<br />
 		<p>此為系統自動發信，請勿直接回覆</p>

app/views/asks/email.html.erb

@@ -32,7 +32,7 @@
     </tr> -->
     <tr>
       <th><%= AskQuestion.human_attribute_name(:name) %>：</th>
-      <td><%= @data['name'].gsub(/[(\n)(\r)]/, "\n" => "<br/>", "\r" => "" ).html_safe %></td>
+      <td><%= @data['name'].to_s.gsub(/[(\n)(\r)]/, "\n" => "<br/>", "\r" => "" ).html_safe %></td>
     </tr> 
   </table>
   <p>此為系統自動發信，請勿直接回覆</p>