diff --git a/modules/autoinstall/autoinstall.admin.model.php b/modules/autoinstall/autoinstall.admin.model.php
index 897160634..0f1c1ec8a 100644
--- a/modules/autoinstall/autoinstall.admin.model.php
+++ b/modules/autoinstall/autoinstall.admin.model.php
@@ -432,8 +432,8 @@ class autoinstallAdminModel extends autoinstall
 		$_download_server = 'https://download.xpressengine.com/';
 
 		$config = new stdClass();
-		$config->location_site = $config_info->location_site ? $config_info->location_site : $_location_site;
-		$config->download_server = $config_info->download_server ? $config_info->download_server : $_download_server;
+		$config->location_site = ($config_info->location_site ?? null) ?: $_location_site;
+		$config->download_server = ($config_info->download_server ?? null) ?: $_download_server;
 		
 		return $config;
 	}
diff --git a/modules/autoinstall/autoinstall.model.php b/modules/autoinstall/autoinstall.model.php
index 3165c913b..cc0031031 100644
--- a/modules/autoinstall/autoinstall.model.php
+++ b/modules/autoinstall/autoinstall.model.php
@@ -349,13 +349,13 @@ class autoinstallModel extends autoinstall
 			$path = substr($path, 0, strlen($path) - 1);
 		}
 
-		if(!$GLOBALS['XE_AUTOINSTALL_PACKAGE_SRL_BY_PATH'][$path])
+		if(empty($GLOBALS['XE_AUTOINSTALL_PACKAGE_SRL_BY_PATH'][$path]))
 		{
 			$args = new stdClass();
 			$args->path = $path;
 			$output = executeQuery('autoinstall.getPackageSrlByPath', $args);
 
-			$GLOBALS['XE_AUTOINSTALL_PACKAGE_SRL_BY_PATH'][$path] = $output->data->package_srl;
+			$GLOBALS['XE_AUTOINSTALL_PACKAGE_SRL_BY_PATH'][$path] = $output->data->package_srl ?? null;
 		}
 
 		return $GLOBALS['XE_AUTOINSTALL_PACKAGE_SRL_BY_PATH'][$path];
diff --git a/modules/board/tpl/board_setup_basic.html b/modules/board/tpl/board_setup_basic.html
index c959c5e61..3f9917067 100644
--- a/modules/board/tpl/board_setup_basic.html
+++ b/modules/board/tpl/board_setup_basic.html
@@ -2,6 +2,7 @@
 <script src="modules/module/tpl/js/module_admin.js"></script>
 <script>
 </script>
+{@ if(!isset($member_config)) $member_config = MemberModel::getMemberConfig()}
 <form ruleset="insertBoardForBasic" id="fo_obj" class="x_form-horizontal" action="./" method="post" enctype="multipart/form-data">
 	<input type="hidden" name="act" value="procBoardAdminUpdateBoard" />
 	<input type="hidden" name="board_name" value="{$module_info->mid}" />
diff --git a/modules/layout/layout.model.php b/modules/layout/layout.model.php
index 48f10ebcd..c00b8dae5 100644
--- a/modules/layout/layout.model.php
+++ b/modules/layout/layout.model.php
@@ -82,7 +82,7 @@ class LayoutModel extends Layout
 
 		foreach($layoutList as $key => $val)
 		{
-			if($thumbs[$val->layouts])
+			if(!empty($thumbs[$val->layouts ?? '']))
 			{
 				$val->thumbnail = $thumbs[$val->layouts];
 				continue;
@@ -330,7 +330,7 @@ class LayoutModel extends Layout
 	 */
 	function getLayoutPath($layout_name = "", $layout_type = "P")
 	{
-		$layout_parse = explode('|@|', $layout_name);
+		$layout_parse = explode('|@|', $layout_name ?? '');
 		if(count($layout_parse) > 1)
 		{
 			$class_path = './themes/'.$layout_parse[0].'/layouts/'.$layout_parse[1].'/';
@@ -420,8 +420,8 @@ class LayoutModel extends Layout
 			$b->title = $b->layout;
 		}
 
-		$aTitle = strtolower($a->title);
-		$bTitle = strtolower($b->title);
+		$aTitle = strtolower($a->title ?? '');
+		$bTitle = strtolower($b->title ?? '');
 
 		if($aTitle == $bTitle)
 		{
@@ -460,7 +460,10 @@ class LayoutModel extends Layout
 			$globalValueKey = 'PC_LAYOUT_DIRECTORIES';
 		}
 
-		if($GLOBALS[$globalValueKey]) return $GLOBALS[$globalValueKey];
+		if(!empty($GLOBALS[$globalValueKey]))
+		{
+			return $GLOBALS[$globalValueKey];
+		}
 
 		$searchedList = FileHandler::readDir($directory);
 		if (!$searchedList) $searchedList = array();
@@ -493,6 +496,12 @@ class LayoutModel extends Layout
 				$xml_file = sprintf('%sskin.xml', $layout_path);
 			}
 		}
+		else
+		{
+			$layout_title = $layout = $layout_srl = null;
+			$site_srl = 0;
+			$vars = new stdClass;
+		}
 
 		// Get a path of the requested module. Return if not exists.
 		if(!isset($layout_path))
@@ -516,7 +525,7 @@ class LayoutModel extends Layout
 			$layout_info->layout = $layout;
 			$layout_info->path = $layout_path;
 			$layout_info->layout_title = $layout_title;
-			if(!$layout_info->layout_type)
+			if(empty($layout_info->layout_type))
 			{
 				$layout_info->layout_type =  $layout_type;
 			}
@@ -524,7 +533,7 @@ class LayoutModel extends Layout
 		}
 
 		// Include the cache file if it is valid and then return $layout_info variable
-		if(!$layout_srl)
+		if(empty($layout_srl))
 		{
 			$cache_file = $this->getLayoutCache($layout, Context::getLangType(), $layout_type);
 		}
@@ -566,7 +575,7 @@ class LayoutModel extends Layout
 
 		$buff = array();
 		$buff[] = '$layout_info = new stdClass;';
-		$buff[] = sprintf('$layout_info->site_srl = %s;', var_export($site_srl, true));
+		$buff[] = sprintf('$layout_info->site_srl = %s;', var_export($site_srl ?? 0, true));
 
 		if($xml_obj->version && $xml_obj->attrs->version == '0.2')
 		{
@@ -575,17 +584,17 @@ class LayoutModel extends Layout
 			sscanf($xml_obj->date->body, '%d-%d-%d', $date_obj->y, $date_obj->m, $date_obj->d);
 			$date = sprintf('%04d%02d%02d', $date_obj->y, $date_obj->m, $date_obj->d);
 			$buff[] = sprintf('$layout_info->layout = %s;', var_export($layout, true));
-			$buff[] = sprintf('$layout_info->type = %s;', var_export($xml_obj->attrs->type, true));
+			$buff[] = sprintf('$layout_info->type = %s;', var_export($xml_obj->attrs->type ?? null, true));
 			$buff[] = sprintf('$layout_info->path = %s;', var_export($layout_path, true));
-			$buff[] = sprintf('$layout_info->title = %s;', var_export($xml_obj->title->body, true));
-			$buff[] = sprintf('$layout_info->description = %s;', var_export($xml_obj->description->body, true));
-			$buff[] = sprintf('$layout_info->version = %s;', var_export($xml_obj->version->body, true));
+			$buff[] = sprintf('$layout_info->title = %s;', var_export($xml_obj->title->body ?? null, true));
+			$buff[] = sprintf('$layout_info->description = %s;', var_export($xml_obj->description->body ?? null, true));
+			$buff[] = sprintf('$layout_info->version = %s;', var_export($xml_obj->version->body ?? null, true));
 			$buff[] = sprintf('$layout_info->date = %s;', var_export($date, true));
-			$buff[] = sprintf('$layout_info->homepage = %s;', var_export($xml_obj->link->body, true));
+			$buff[] = sprintf('$layout_info->homepage = %s;', var_export($xml_obj->link->body ?? null, true));
 			$buff[] = sprintf('$layout_info->layout_srl = $layout_srl;');
 			$buff[] = sprintf('$layout_info->layout_title = $layout_title;');
-			$buff[] = sprintf('$layout_info->license = %s;', var_export($xml_obj->license->body, true));
-			$buff[] = sprintf('$layout_info->license_link = %s;', var_export($xml_obj->license->attrs->link, true));
+			$buff[] = sprintf('$layout_info->license = %s;', var_export($xml_obj->license->body ?? null, true));
+			$buff[] = sprintf('$layout_info->license_link = %s;', var_export($xml_obj->license->attrs->link ?? null, true));
 			$buff[] = sprintf('$layout_info->layout_type = %s;', var_export($layout_type, true));
 
 			// Author information
@@ -625,11 +634,11 @@ class LayoutModel extends Layout
 						$name = $var->attrs->name;
 
 						$buff[] = sprintf('$layout_info->extra_var->%s = new stdClass;', $name);
-						$buff[] = sprintf('$layout_info->extra_var->%s->group = %s;', $name, var_export($group->title->body, true));
-						$buff[] = sprintf('$layout_info->extra_var->%s->title = %s;', $name, var_export($var->title->body, true));
-						$buff[] = sprintf('$layout_info->extra_var->%s->type = %s;', $name, var_export($var->attrs->type, true));
+						$buff[] = sprintf('$layout_info->extra_var->%s->group = %s;', $name, var_export($group->title->body ?? null, true));
+						$buff[] = sprintf('$layout_info->extra_var->%s->title = %s;', $name, var_export($var->title->body ?? null, true));
+						$buff[] = sprintf('$layout_info->extra_var->%s->type = %s;', $name, var_export($var->attrs->type ?? null, true));
 						$buff[] = sprintf('$layout_info->extra_var->%s->value = $vars->%s;', $name, $name);
-						$buff[] = sprintf('$layout_info->extra_var->%s->description = %s;', $name, var_export($var->description->body, true));
+						$buff[] = sprintf('$layout_info->extra_var->%s->description = %s;', $name, var_export($var->description->body ?? null, true));
 
 						$options = $var->options;
 						if(!$options) continue;
@@ -693,17 +702,17 @@ class LayoutModel extends Layout
 			$date = sprintf('%04d%02d%02d', $date_obj->y, $date_obj->m, $date_obj->d);
 			$buff[] = sprintf('$layout_info->layout = %s;', var_export($layout, true));
 			$buff[] = sprintf('$layout_info->path = %s;', var_export($layout_path, true));
-			$buff[] = sprintf('$layout_info->title = %s;', var_export($xml_obj->title->body, true));
-			$buff[] = sprintf('$layout_info->description = %s;', var_export($xml_obj->author->description->body, true));
-			$buff[] = sprintf('$layout_info->version = %s;', var_export($xml_obj->attrs->version, true));
+			$buff[] = sprintf('$layout_info->title = %s;', var_export($xml_obj->title->body ?? null, true));
+			$buff[] = sprintf('$layout_info->description = %s;', var_export($xml_obj->author->description->body ?? null, true));
+			$buff[] = sprintf('$layout_info->version = %s;', var_export($xml_obj->attrs->version ?? null, true));
 			$buff[] = sprintf('$layout_info->date = %s;', var_export($date, true));
 			$buff[] = sprintf('$layout_info->layout_srl = $layout_srl;');
 			$buff[] = sprintf('$layout_info->layout_title = $layout_title;');
 			// Author information
 			$buff[] = '$layout_info->author[0] = new stdClass();';
-			$buff[] = sprintf('$layout_info->author[0]->name = %s;', var_export($xml_obj->author->name->body, true));
-			$buff[] = sprintf('$layout_info->author[0]->email_address = %s;', var_export($xml_obj->author->attrs->email_address, true));
-			$buff[] = sprintf('$layout_info->author[0]->homepage = %s;', var_export($xml_obj->author->attrs->link, true));
+			$buff[] = sprintf('$layout_info->author[0]->name = %s;', var_export($xml_obj->author->name->body ?? null, true));
+			$buff[] = sprintf('$layout_info->author[0]->email_address = %s;', var_export($xml_obj->author->attrs->email_address ?? null, true));
+			$buff[] = sprintf('$layout_info->author[0]->homepage = %s;', var_export($xml_obj->author->attrs->link ?? null, true));
 			// Extra vars (user defined variables to use in a template)
 			$extra_var_groups = $xml_obj->extra_vars->group;
 			if(!$extra_var_groups) $extra_var_groups = $xml_obj->extra_vars;
@@ -727,11 +736,11 @@ class LayoutModel extends Layout
 						$var = $extra_vars[$i];
 						$name = $var->attrs->name;
 						$buff[] = sprintf('$layout_info->extra_var->%s = new stdClass();', $name);
-						$buff[] = sprintf('$layout_info->extra_var->%s->group = %s;', $name, var_export($group->title->body, true));
-						$buff[] = sprintf('$layout_info->extra_var->%s->title = %s;', $name, var_export($var->title->body, true));
-						$buff[] = sprintf('$layout_info->extra_var->%s->type = %s;', $name, var_export($var->attrs->type, true));
+						$buff[] = sprintf('$layout_info->extra_var->%s->group = %s;', $name, var_export($group->title->body ?? null, true));
+						$buff[] = sprintf('$layout_info->extra_var->%s->title = %s;', $name, var_export($var->title->body ?? null, true));
+						$buff[] = sprintf('$layout_info->extra_var->%s->type = %s;', $name, var_export($var->attrs->type ?? null, true));
 						$buff[] = sprintf('$layout_info->extra_var->%s->value = $vars->%s;', $name, $name);
-						$buff[] = sprintf('$layout_info->extra_var->%s->description = %s;', $name, var_export($var->description->body, true));
+						$buff[] = sprintf('$layout_info->extra_var->%s->description = %s;', $name, var_export($var->description->body ?? null, true));
 
 						$options = $var->options;
 						if(!$options) continue;
@@ -762,8 +771,8 @@ class LayoutModel extends Layout
 					if($menus[$i]->attrs->default == "true") $buff[] = sprintf('$layout_info->default_menu = %s;', var_export($name, true));
 					$buff[] = sprintf('$layout_info->menu->%s = new stdClass();', $name);
 					$buff[] = sprintf('$layout_info->menu->%s->name = %s;', $name, var_export($name, true));
-					$buff[] = sprintf('$layout_info->menu->%s->title = %s;', $name, var_export($menus[$i]->title->body, true));
-					$buff[] = sprintf('$layout_info->menu->%s->maxdepth = %s;', $name, var_export($menus[$i]->maxdepth->body, true));
+					$buff[] = sprintf('$layout_info->menu->%s->title = %s;', $name, var_export($menus[$i]->title->body ?? null, true));
+					$buff[] = sprintf('$layout_info->menu->%s->maxdepth = %s;', $name, var_export($menus[$i]->maxdepth->body ?? null, true));
 					$buff[] = sprintf('$layout_info->menu->%s->menu_srl = $vars->%s;', $name, $name);
 					$buff[] = sprintf('$layout_info->menu->%s->xml_file = "./files/cache/menu/".$vars->%s.".xml.php";',$name, $name);
 					$buff[] = sprintf('$layout_info->menu->%s->php_file = "./files/cache/menu/".$vars->%s.".php";',$name, $name);
@@ -776,7 +785,7 @@ class LayoutModel extends Layout
 		$layout_config = $oModuleModel->getModulePartConfig('layout', $layout_srl);
 		$header_script = trim($layout_config->header_script);
 
-		if($header_script)
+		if(!empty($header_script))
 		{
 			$buff[] = sprintf(' $layout_info->header_script = %s; ', var_export($header_script, true));
 		}
diff --git a/modules/menu/menu.admin.model.php b/modules/menu/menu.admin.model.php
index b8932a5b4..d70fbf3e3 100644
--- a/modules/menu/menu.admin.model.php
+++ b/modules/menu/menu.admin.model.php
@@ -48,7 +48,6 @@ class MenuAdminModel extends Menu
 	{
 		// Get information from the DB
 		$args = new stdClass();
-		$args->menu_srl = $menu_srl;
 		$output = executeQueryArray('menu.getMenus', $args);
 		if(!$output->data) return;
 		$menus = $output->data;
@@ -199,8 +198,8 @@ class MenuAdminModel extends Menu
 				if($moduleInfo->mid == $menuItem->url)
 				{
 					$menuItem->moduleType = $moduleInfo->module;
-					$menuItem->pageType = $moduleInfo->page_type;
-					$menuItem->layoutSrl = $moduleInfo->layout_srl;
+					$menuItem->pageType = $moduleInfo->page_type ?? null;
+					$menuItem->layoutSrl = $moduleInfo->layout_srl ?? -1;
 				}
 			}
 		}
@@ -359,14 +358,14 @@ class MenuAdminModel extends Menu
 			$defaultMobileSkin = $oModuleModel->getModuleDefaultSkin($module_name, 'M');
 			$skinInfo = $oModuleModel->loadSkinInfo(ModuleHandler::getModulePath($module_name), $defaultSkin);
 			$mobileSkinInfo = $oModuleModel->loadSkinInfo(ModuleHandler::getModulePath($module_name), $defaultMobileSkin, 'm.skins');
-			if($defaultMobileSkin === '/USE_RESPONSIVE/' && !$mobileSkinInfo || !$mobileSkinInfo->title)
+			if($defaultMobileSkin === '/USE_RESPONSIVE/' && !$mobileSkinInfo || empty($mobileSkinInfo->title))
 			{
 				$mobileSkinInfo = $mobileSkinInfo ?: new stdClass;
 				$mobileSkinInfo->title = lang('use_responsive_pc_skin');
 			}
 			$module->defaultSkin = new stdClass();
 			$module->defaultSkin->skin = $defaultSkin;
-			$module->defaultSkin->title = $skinInfo->title ? $skinInfo->title : $defaultSkin;
+			$module->defaultSkin->title = isset($skinInfo->title) ? $skinInfo->title : $defaultSkin;
 			$module->defaultMobileSkin = new stdClass();
 			$module->defaultMobileSkin->skin = $defaultMobileSkin;
 			$module->defaultMobileSkin->title = $mobileSkinInfo->title ? $mobileSkinInfo->title : $defaultMobileSkin;
@@ -556,7 +555,7 @@ class MenuAdminModel extends Menu
 						}
 
 						include($value->php_file);
-						if(!$menu)
+						if(empty($menu))
 						{
 							$menu = new stdClass;
 							$menu->list = array();
@@ -636,6 +635,10 @@ class MenuAdminModel extends Menu
 		{
 			$setupUrl = getNotEncodedUrl('', 'module', 'admin', 'act', $moduleConfInfo->setup_index_act, 'module_srl', $moduleInfo->module_srl);
 		}
+		else
+		{
+			$setupUrl = null;
+		}
 
 		if($moduleConfInfo->simple_setup_index_act)
 		{
@@ -691,7 +694,7 @@ class MenuAdminModel extends Menu
 			{
 				$menu['module_srl'] = $midInfo->module_srl;
 				$menu['module'] = $midInfo->module;
-				if($midInfo->page_type)
+				if(!empty($midInfo->page_type))
 				{
 					$menu['module_type'] = $midInfo->page_type;
 				}
@@ -701,11 +704,11 @@ class MenuAdminModel extends Menu
 				}
 			}
 
-			if($moduleInfo->setup_index_act)
+			if(!empty($moduleInfo->setup_index_act))
 			{
 				$menu['setup_index_act'] = $moduleInfo->setup_index_act;
 			}
-			else if($moduleInfo->default_index_act)
+			elseif(!empty($moduleInfo->default_index_act))
 			{
 				$menu['setup_index_act'] = $moduleInfo->default_index_act;
 			}
diff --git a/modules/module/module.model.php b/modules/module/module.model.php
index d8eb18165..cb7fc71de 100644
--- a/modules/module/module.model.php
+++ b/modules/module/module.model.php
@@ -322,13 +322,13 @@ class ModuleModel extends Module
 		}
 
 		$moduleInfo->designSettings->layout->pcIsDefault = $moduleInfo->layout_srl == -1 ? 1 : 0;
-		$moduleInfo->designSettings->layout->pc = $layoutInfoPc->title;
+		$moduleInfo->designSettings->layout->pc = $layoutInfoPc->title ?? null;
 		$moduleInfo->designSettings->layout->mobileIsDefault = $moduleInfo->mlayout_srl == -1 ? 1 : 0;
-		$moduleInfo->designSettings->layout->mobile = $layoutInfoMobile->title;
+		$moduleInfo->designSettings->layout->mobile = $layoutInfoMobile->title ?? null;
 		$moduleInfo->designSettings->skin->pcIsDefault = $moduleInfo->is_skin_fix == 'N' ? 1 : 0;
-		$moduleInfo->designSettings->skin->pc = $skinInfoPc->title;
+		$moduleInfo->designSettings->skin->pc = $skinInfoPc->title ?? null;
 		$moduleInfo->designSettings->skin->mobileIsDefault = ($moduleInfo->is_mskin_fix == 'N' && $moduleInfo->mskin !== '/USE_RESPONSIVE/') ? 1 : 0;
-		$moduleInfo->designSettings->skin->mobile = $skinInfoMobile->title;
+		$moduleInfo->designSettings->skin->mobile = $skinInfoMobile->title ?? null;
 
 		$module_srl = Rhymix\Framework\Cache::get('site_and_module:module_srl:' . $mid);
 		if($module_srl)
@@ -988,7 +988,7 @@ class ModuleModel extends Module
 	{
 		// Read xml file having skin information
 		if(substr($path,-1)!='/') $path .= '/';
-		if(!preg_match('/^[a-zA-Z0-9_-]+$/', $skin))
+		if(!preg_match('/^[a-zA-Z0-9_-]+$/', $skin ?? ''))
 		{
 			return;
 		}
@@ -1983,7 +1983,7 @@ class ModuleModel extends Module
 		{
 			include($designInfoFile);
 
-			$skinName = $designInfo->module->{$module_name}->{$target};
+			$skinName = $designInfo->module->{$module_name}->{$target} ?? null;
 		}
 		if(!isset($designInfo))
 		{