fix 500 error

files/templates/user_in_table.html

@@ -1,4 +1,5 @@
 {%- include 'admin/shadowbanned_tooltip.html' -%}
+{% if user %}
 <a data-sort-key="{{user.username.lower()}}" style="color:#{{user.name_color}};font-weight:bold" href="/@{{user.username}}">
 	<div class="profile-pic-20-wrapper mb-2">
 		<img loading="lazy" src="{{user.profile_url}}" class="pp20">
@@ -8,3 +9,4 @@
 	</div>
 	<span {% if user.patron %}class="patron" style="background-color:#{{user.name_color}}"{% endif %}>{{user.user_name}}</span>
 </a>
+{% endif %}