diff --git a/modules/board/skins/xedition/_header.html b/modules/board/skins/xedition/_header.html
index bb5ecdb87..b33579ca3 100644
--- a/modules/board/skins/xedition/_header.html
+++ b/modules/board/skins/xedition/_header.html
@@ -2,7 +2,7 @@
 <load target="board.default.js" type="body" />
 <load target="../../../../common/xeicon/xeicon.min.css" />
 
-<!--@if($order_type == "desc")-->
+<!--@if(isset($order_type) && $order_type == "desc")-->
     {@ $order_type = "asc"; }
 <!--@else-->
     {@ $order_type = "desc"; }
diff --git a/modules/board/skins/xedition/_read.html b/modules/board/skins/xedition/_read.html
index 837bc3c45..449474e2c 100644
--- a/modules/board/skins/xedition/_read.html
+++ b/modules/board/skins/xedition/_read.html
@@ -7,9 +7,9 @@
 		</h1>
 		<p class="meta">
 			<span class="author">
-				<i class="xi-user"></i><a cond="$module_info->display_author!='N' && $oDocument->getMemberSrl() <= 0 && $oDocument->isExistsHomepage()" href="{$oDocument->getHomepageUrl()}" target="_blank" rel="noopener" class="author">{$oDocument->getNickName()}</a>
-				<block cond="$module_info->display_author!='N' && $oDocument->getMemberSrl() <= 0 && !$oDocument->isExistsHomepage()">{$oDocument->getNickName()}</block>
-				<a cond="$module_info->display_author!='N' && $oDocument->getMemberSrl() > 0" href="#popup_menu_area" class="member_{$oDocument->get('member_srl')} author" onclick="return false">{$oDocument->getNickName()}</a>
+				<i class="xi-user"></i><a cond="isset($module_info->display_author) && $module_info->display_author != 'N' && $oDocument->getMemberSrl() <= 0 && $oDocument->isExistsHomepage()" href="{$oDocument->getHomepageUrl()}" target="_blank" rel="noopener" class="author">{$oDocument->getNickName()}</a>
+				<block cond="isset($module_info->display_author) && $module_info->display_author != 'N' && $oDocument->getMemberSrl() <= 0 && !$oDocument->isExistsHomepage()">{$oDocument->getNickName()}</block>
+				<a cond="isset($module_info->display_author) && $module_info->display_author != 'N' && $oDocument->getMemberSrl() > 0" href="#popup_menu_area" class="member_{$oDocument->get('member_srl')} author" onclick="return false">{$oDocument->getNickName()}</a>
 			</span>
 			<span class="time">
 				<i class="xi-time"></i> {$oDocument->getRegdate('Y.m.d H:i')}
@@ -109,7 +109,7 @@
 			</span>
 			<a class="document_{$oDocument->document_srl} action" href="#popup_menu_area" onclick="return false">{$lang->cmd_document_do}</a>
 		</div>
-		<div class="sign" cond="$module_info->display_sign!='N'&&($oDocument->getProfileImage()||$oDocument->getSignature())">
+		<div class="sign" cond="isset($module_info->display_sign) && $module_info->display_sign != 'N' && ($oDocument->getProfileImage() || $oDocument->getSignature())">
 			<img cond="$oDocument->getProfileImage()" src="{$oDocument->getProfileImage()}" alt="Profile" class="pf" />
 			<div cond="$oDocument->getSignature()" class="tx">{$oDocument->getSignature()}</div>
 		</div>
diff --git a/modules/board/skins/xedition/list.html b/modules/board/skins/xedition/list.html
index 6230161a0..54d14bf5c 100644
--- a/modules/board/skins/xedition/list.html
+++ b/modules/board/skins/xedition/list.html
@@ -1,10 +1,10 @@
 <include target="_header.html" />
 <include cond="$oDocument->isExists()" target="_read.html" />
 <ul class="cTab" cond="$module_info->use_category=='Y'">
-	<li class="on"|cond="!$category"><a href="{getUrl('category','','page','')}">{$lang->total}</a></li>
-	<li loop="$cate_list=>$key,$val" class="on"|cond="$category==$val->category_srl"><a href="{getUrl('category',$val->category_srl,'document_srl','', 'page', '')}">{$val->title}<!--<em cond="$val->document_count">[{$val->document_count}]</em>--></a>
+	<li class="on"|cond="!isset($category) || !$category"><a href="{getUrl('category','','page','')}">{$lang->total}</a></li>
+	<li loop="$cate_list=>$key,$val" class="on"|cond="isset($category) && $category == $val->category_srl"><a href="{getUrl('category',$val->category_srl,'document_srl','', 'page', '')}">{$val->title}<!--<em cond="$val->document_count">[{$val->document_count}]</em>--></a>
 		<ul cond="count($val->children)">
-			<li loop="$val->children=>$idx,$item" class="on_"|cond="$category==$item->category_srl"><a href="{getUrl('category',$item->category_srl,'document_srl','', 'page', '')}">{$item->title}<!--<em cond="$val->document_count">[{$item->document_count}]</em>--></a></li>
+			<li loop="$val->children=>$idx,$item" class="on_"|cond="isset($category) && $category == $item->category_srl"><a href="{getUrl('category',$item->category_srl,'document_srl','', 'page', '')}">{$item->title}<!--<em cond="$val->document_count">[{$item->document_count}]</em>--></a></li>
 		</ul>
 	</li>
 </ul>
@@ -44,14 +44,14 @@
 			<tr class="notice" loop="$notice_list=>$no,$document">
 				<block loop="$list_config=>$key,$val">
 				<td class="notice" cond="$val->type=='no' && $val->idx==-1">
-					<block cond="$document_srl==$document->document_srl">&raquo;</block>
-					<block cond="$document_srl!=$document->document_srl">{$lang->notice}</block>
+					<block cond="isset($document_srl) && $document_srl == $document->document_srl">&raquo;</block>
+					<block cond="!isset($document_srl) || $document_srl != $document->document_srl">{$lang->notice}</block>
 				</td>
 				<td class="module_title" cond="$val->type=='module_title' && $val->idx==-1">
 					<a href="{getUrl('', 'mid', $document->get('mid'))}">{$document->get('module_title')}</a>
 				</td>
 				<td class="title" cond="$val->type=='title' && $val->idx==-1">
-					<a href="{getUrl('document_srl',$document->document_srl, 'listStyle', $listStyle, 'cpage','')}">
+					<a href="{getUrl('document_srl',$document->document_srl, 'listStyle', $listStyle ?? '', 'cpage','')}">
 						{$document->getTitle()}
 					</a>
 					<a cond="$document->getCommentCount()" href="{getUrl('document_srl', $document->document_srl)}#comment" class="replyNum" title="Replies">
@@ -90,14 +90,14 @@
 			<tr loop="$document_list=>$no,$document">
 				<block loop="$list_config=>$key,$val">
 				<td class="no" cond="$val->type=='no' && $val->idx==-1">
-					<block cond="$document_srl==$document->document_srl">&raquo;</block>
-					<block cond="$document_srl!=$document->document_srl">{$no}</block>
+					<block cond="isset($document_srl) && $document_srl == $document->document_srl">&raquo;</block>
+					<block cond="!isset($document_srl) || $document_srl != $document->document_srl">{$no}</block>
 				</td>
 				<td class="module_title" cond="$val->type=='module_title' && $val->idx==-1">
 					<a href="{getUrl('', 'mid', $document->get('mid'))}">{$document->get('module_title')}</a>
 				</td>
 				<td class="title" cond="$val->type=='title' && $val->idx==-1">
-					<a href="{getUrl('document_srl',$document->document_srl, 'listStyle', $listStyle, 'cpage','')}">{$document->getTitle()}</a>
+					<a href="{getUrl('document_srl',$document->document_srl, 'listStyle', $listStyle ?? '', 'cpage','')}">{$document->getTitle()}</a>
 					<a cond="$document->getCommentCount()" href="{getUrl('document_srl', $document->document_srl)}#comment" class="replyNum" title="Replies">[{$document->getCommentCount()}]</a>
 					<a cond="$document->getTrackbackCount()" href="{getUrl('document_srl', $document->document_srl)}#trackback" class="trackbackNum" title="Trackbacks">[{$document->getTrackbackCount()}]</a>
 					{$document->printExtraImages(60*60*$module_info->duration_new)}
@@ -140,27 +140,26 @@
 	</div>
 
 	<form cond="$grant->view" action="{getUrl()}" method="get" onsubmit="return procFilter(this, search)" id="board_search" class="board_search" no-error-return-url="true">
-		<input type="hidden" name="vid" value="{$vid}" />
 		<input type="hidden" name="mid" value="{$mid}" />
-		<input type="hidden" name="category" value="{$category}" />
+		<input type="hidden" name="category" value="{$category ?? ''}" />
 		<select name="search_target">
-			<option loop="$search_option=>$key,$val" value="{$key}" selected="selected"|cond="$search_target==$key">{$val}</option>
+			<option loop="$search_option=>$key,$val" value="{$key}" selected="selected"|cond="isset($search_target) && $search_target == $key">{$val}</option>
 		</select>
 		<div class="search_input">
 			<i class="xi-magnifier"></i>
-			<input type="text" name="search_keyword" value="{escape($search_keyword, false)}" title="{$lang->cmd_search}" class="iText" />
+			<input type="text" name="search_keyword" value="{escape($search_keyword ?? '', false)}" title="{$lang->cmd_search}" class="iText" />
 		</div>
 		<button type="submit" class="btn" onclick="xGetElementById('board_search').submit();return false;">{$lang->cmd_search}</button>
-        <a cond="$last_division" href="{getUrl('page',1,'document_srl','','division',$last_division,'last_division','')}" class="btn">{$lang->cmd_search_next}</a>
+        <a cond="isset($last_division) && $last_division" href="{getUrl('page',1,'document_srl','','division',$last_division,'last_division','')}" class="btn">{$lang->cmd_search_next}</a>
 	</form>
 
 	<div class="pagination" cond="$document_list || $notice_list">
-		<a href="{getUrl('page','','document_srl','','division',$division,'last_division',$last_division)}" class="direction prev"><i class="xi-angle-left"></i>&nbsp;{$lang->first_page}</a> 
+		<a href="{getUrl('page','','document_srl','','division',$division ?? '','last_division',$last_division ?? '')}" class="direction prev"><i class="xi-angle-left"></i>&nbsp;{$lang->first_page}</a> 
 		<block loop="$page_no=$page_navigation->getNextPage()">
 			<strong cond="$page==$page_no">{$page_no}</strong> 
-			<a cond="$page!=$page_no" href="{getUrl('page',$page_no,'document_srl','','division',$division,'last_division',$last_division)}">{$page_no}</a>
+			<a cond="$page!=$page_no" href="{getUrl('page',$page_no,'document_srl','','division',$division ?? '','last_division',$last_division ?? '')}">{$page_no}</a>
 		</block>
-		<a href="{getUrl('page',$page_navigation->last_page,'document_srl','','division',$division,'last_division',$last_division)}" class="direction next">{$lang->last_page}&nbsp;<i class="xi-angle-right"></i></a>
+		<a href="{getUrl('page',$page_navigation->last_page,'document_srl','','division',$division ?? '','last_division',$last_division ?? '')}" class="direction next">{$lang->last_page}&nbsp;<i class="xi-angle-right"></i></a>
 	</div>
 
 </div>