Помогите выяснить почему не работает кэш?

<?php
if( ! defined( 'DATALIFEENGINE' ) ) {die( "Hacking attempt!" );}

$xf = 'categories';

$tpl->result['content'] = dle_cache( $xf, $config['skin'], true );
if( $tpl->result['content'] ) $tpl->result['content'] = json_decode($tpl->result['content'], true);

if( !$tpl->result['content'] ) {
	
	$tpl->load_template( $xf . '.tpl' ); // подключаем шаблон

	$categorie = $db->query("SELECT t1.*, t2.count from dle_category t1 join (SELECT cat_id, count(*) as count from dle_post_extras_cats t2 GROUP BY cat_id) t2 ON t1.id = t2.cat_id HAVING t1.id NOT IN (193) ORDER BY t1.posi ASC")->fetch_all(true);
	
	foreach ($categorie as $key => $value) {		
	$tpl->set('{name}', $value['name']);
	$tpl->set('{fulldescr}', $value['fulldescr']);
	$tpl->set('{icon}', $value['icon']);
	$tpl->set('{link}', get_url($value['id']));
	$tpl->set( '{news-count}', $value['count'] );
	$tpl->compile('content');
	}
	
	$tpl->result['content'];
	
	create_cache ( $xf, json_encode($tpl->result['content'], JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES ), $config['skin'], true );
	
}
	$tpl->clear();

<?php
if( ! defined( 'DATALIFEENGINE' ) ) {die( "Hacking attempt!" );}

$xf = 'categories';

$tpl->result['content'] = dle_cache( $xf . $cs, $config['skin'], true );
if( $tpl->result['content'] ) $tpl->result['content'] = json_decode($tpl->result['content'], true);

if( !$tpl->result['content'] ) {
	
	$tpl->load_template( $xf . '.tpl' ); // подключаем шаблон
	
$catPerPage = 36;
$cs = intval($_GET['cstart']);
$pageCstart = $i = $cstart = ((isset($_GET['cstart']) ? intval($_GET['cstart']) : 1) - 1) * $catPerPage;
$getCountCat = $db->super_query("SELECT COUNT(DISTINCT cat_id) AS count FROM " . PREFIX . "_post_extras_cats t LEFT JOIN "  . PREFIX . "_category p ON(t.cat_id=p.id)")['count'];
$endPages = ceil($getCountCat / $catPerPage);
if ($cs > $endPages) {
    header("HTTP/1.0 301 Moved Permanently");
    header("Location: /" . $xf . "/page/{$endPages}/");
    die("Redirect");
}
$config['seo_control'] = false;	

	$categorie = $db->query("SELECT t1.*, t2.count from dle_category t1 join (SELECT cat_id, count(*) as count from dle_post_extras_cats t2 GROUP BY cat_id) t2 ON t1.id = t2.cat_id HAVING t1.id NOT IN (193) ORDER BY t1.posi ASC LIMIT {$cstart}, {$catPerPage}")->fetch_all(true);


	
	foreach ($categorie as $key => $value) {
    $i++;		
	$tpl->set('{name}', $value['name']);
	$tpl->set('{fulldescr}', $value['fulldescr']);
	$tpl->set('{icon}', $value['icon']);
	$tpl->set('{link}', get_url($value['id']));
	$tpl->set( '{news-count}', $value['count'] );
	$tpl->compile('content');
	}
	
	$tpl->result['content'];
	
	if ($getCountCat > $catPerPage) {
    $tpl->load_template('navigation.tpl');
    $no_prev = false;
    $no_next = false;

    if ($cstart > 0) {
        $previous = $cstart / $catPerPage;
        if ($previous == 1) {
            $previous = $config['http_home_url'] . $xf . '/';
        } else {
            $previous = $config['http_home_url'] . $xf . '/page/' . $previous . '/';
        }

        $tpl->set_block("'\\[prev-link\\](.*?)\\[/prev-link\\]'si", "<a href=\"" . $previous . "\">\\1</a>");
    } else {
        $tpl->set_block("'\[prev-link\](.*?)\[/prev-link\]'si", "<span>\\1</span>");
        $no_prev = true;
    }

    $pages = '';

    if ($getCountCat > $catPerPage) {
        $enpages_count = ceil($getCountCat / $catPerPage);
        $cstart = ($cstart / $catPerPage) + 1;

        if ($enpages_count <= 10) {
            for ($j = 1; $j <= $enpages_count; $j++) {
                if ($j != $cstart) {
                    if ($j == 1) {
                        $pages .= "<a href=\"" .  $config['http_home_url'] . $xf . "/\">$j</a> ";
                    } else {
                        $pages .= "<a href=\"" .  $config['http_home_url'] . $xf ."/page/" . $j . "/\">$j</a> ";
                    }
                } else {
                    $pages .= "<span>$j</span> ";
                }
            }
        } else {
            $start = 1;
            $end = 10;
            $nav_prefix = "<span class=\"nav_ext\">{$lang['nav_trennen']}</span> ";

            if ($cstart > 0) {
                if ($cstart > 6) {
                    $start = $cstart - 4;
                    $end = $start + 8;
                    if ($end >= $enpages_count - 1) {
                        $start = $enpages_count - 9;
                        $end = $enpages_count - 1;
                    }
                }
            }

            if ($end >= $enpages_count - 1) {
                $nav_prefix = '';
            } else {
                $nav_prefix = "<span class=\"nav_ext\">{$lang['nav_trennen']}</span> ";
            }

            if ($start >= 2) {
                if ($start >= 3) {
                    $before_prefix = "<span class=\"nav_ext\">{$lang['nav_trennen']}</span> ";
                } else {
                    $before_prefix = '';
                }

                $pages .= "<a href=\"" . $config['http_home_url'] . $xf . "/\">1</a> ".$before_prefix;
            }

            for ($j = $start; $j <= $end; $j++) {
                if ($j != $cstart) {
                    if ($j == 1) {
                        $pages .= "<a href=\"" . $config['http_home_url'] . $xf . "/\">$j</a> ";
                    }  else {
                        $pages .= "<a href=\"" . $config['http_home_url'] . $xf . "/page/" . $j . "/\">$j</a> ";
                    }
                } else {
                    $pages .= "<span>$j</span> ";
                }
            }

            if ($cstart != $enpages_count) {
                $pages .= $nav_prefix . "<a href=\"" . $config['http_home_url'] . $xf . "/page/{$enpages_count}/\">{$enpages_count}</a>";
            } else {
                $pages .= "<span>{$enpages_count}</span> ";
            }
        }
    }

    $tpl->set('{pages}', $pages);

    if ($catPerPage < $getCountCat && $i < $getCountCat) {
        $next_page = ($i / $catPerPage) + 1;
        $next = $config['http_home_url'] . $xf . '/page/' . $next_page . '/';
        $tpl->set_block("'\[next-link\](.*?)\[/next-link\]'si", "<a href=\"" . $next . "\">\\1</a>");
    } else {
        $tpl->set_block("'\[next-link\](.*?)\[/next-link\]'si", "<span>\\1</span>");
        $no_next = true;
    }

    if (!$no_prev || !$no_next) {
        $tpl->compile('navi');

        switch ($config['news_navigation']) {
            case "2":
                $tpl->result['content'] = $tpl->result['navi'].$tpl->result['content'];
                break;
            case "3":
                $tpl->result['content'] = $tpl->result['navi'].$tpl->result['content'].$tpl->result['navi'];
                break;
            default:
                $tpl->result['content'] .= $tpl->result['navi'];
                break;

        }
    }
}
	
	create_cache ( $xf . $cs, json_encode($tpl->result['content'], JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES ), $config['skin'], true );
	
}

	$tpl->clear();