修复bug

app/view/profile/sign.ejs

@@ -51,7 +51,7 @@
                                     <div class="position-relative">
                                         <img src="/public/images/baobiao3.png">
                                         <div class="position-absolute fixed-top" id="sign-show" style="left:290px;top:320px">
-                                            <% if (!accountData.sign_path) { %>
+                                            <% if (accountData.sign_path !== '') { %>
                                                 <img src="/public/upload/sign/<%= accountData.sign_path %>" width="90">
                                             <% } %>
                                         </div>