Как исправить ошибку с RSS рассылкой в соц. сети?

Неделю назад отвалилась rss лента,на протяжении 1,5 года все работало исправно,никаких изменений не вносилось.

Текст с ошибкой:
This page contains the following errors:

error on line 2 at column 1: Extra content at the end of the document
Below is a rendering of the page up to the first error.

Код файла:

PHP:

1. <?php
2. // spec https://partner.news.yandex.ru/tech.pdf
3. $this->locator->onlyContent = true;
4. $this->addHeader("Content-Type", 'text/xml; charset=' . PAGE_CHARSET);
5. $content .= '<?xml version="1.0" encoding="'.PAGE_CHARSET.'"?>
6. <rss xmlns:yandex="http://news.yandex.ru" xmlns:media="http://search.yahoo.com/mrss/" version="2.0"><channel><title>'.$this->parcer->pageContent(array('sharetitle')).'</title>
7. <link>'.$this->locator->host.'</link>
8. <description>'.$this->parcer->pageContent(array('sharedescription')).'</description>
9. <yandex:logo>'.$this->locator->host.'css/normal_logo.png</yandex:logo>
10. <yandex:logo type="square">'.$this->locator->host.'css/square_logo180x180.png</yandex:logo>';
11. $deep = (int)$this->tools->valREQUEST('deep');
12. if($deep==0)$deep=9;
13. // все ссылки на самостоятельные страницы
14. /*
15. /bz/4x4-club/
16. /bz/spy/
17. /bz/video/
18. */
19. if ($this->sql->exec("select *, datediff(now(),`ndate`) as 'datediff' from meta where (`link` like '/news/%' or `link` like '/bz/4x4-club/%' or `link` like '/bz/spy/%' or `link` like '/bz/video/%' or `link` like '/bz/handmade/%' or `link` like '/bz/retro/%' or `link` like '/news/pdd/%' or `link` like '/bz/camper/%') and datediff(now(),`ndate`) < $deep order by `ndate`")){
20. if ($this->sql->row > 0){
21. foreach($this->sql->aResult as $line){
22.   $resMatch = array('href'=>array(),'src'=>array());
23.   $descr = $this->parcer->run($line['content']);
24.   $authorMail = ADMIN_MAIL;
25.   preg_match_all("/<a[^>]*>.*?<\/a>/iD",$descr,$ancorMatch);
26.   foreach($ancorMatch as $ancor){
27.     preg_match_all('/[f|c]="([^"]+)"/iD',$ancor[0],$res);
28.     $ancorName = strip_tags($ancor[0]);
29.     foreach($res[0] as $i=>$v){
30.       if(substr($v,0,1)=='f'){
31.         if(strpos($v,$this->locator->host)===false){
32.           if(!in_array($res[1][$i],$resMatch['href']))$resMatch['href'][] = array($res[1][$i],$ancorName);
33.         }
34.       }else{
35.         if(!in_array($res[1][$i],$resMatch['src']))$resMatch['src'][] = $res[1][$i];
36.       }
37.     }
38.   }
39.   $descr = $this->tools->validXML(strip_tags($descr));
40.   $link = $this->locator->host.substr($line['link'],1);
41.   $nDate = new DateTime($line['ndate']);
42.   $nDate = $nDate->format('r');
43.   $strPic = ''; $strLink = '';
44.   foreach($resMatch['src'] as $v){
45.     $ext = pathinfo($v,PATHINFO_EXTENSION);
46.     $path = str_replace($this->locator->host,ABSPATH,$v);
47.     if(is_file($path)){
48.       $imgInfo = stat($path);
49.       $strPic .= '<enclosure url="'.$v.'" type="image/'.$ext.'" length="'.$imgInfo['size'].'"/>';
50.     }
51.   }
52.   if(count($resMatch['href'])>0){
53.     $strLink .= '<yandex:related>';
54.     foreach($resMatch['href'] as $v){
55.       $strLink .= '<link url="'.$v[0].'">'.($v[1]?$v[1]:$v[0]).'</link>';
56.     }
57.     $strLink .= '</yandex:related>';
58.   }
59. $content .= <<<TXT
60. <item>
61. <title>{$this->tools->validXML($line['title'])}</title>
62. <link>$link</link>
63. <guid>$link</guid>
64. <description>{$this->tools->validXML($line['description'])}</description>
65. <author>$authorMail</author>
66. <category>Авто</category>
67. <pubDate>$nDate</pubDate>
68. <yandex:genre>article</yandex:genre>
69. <yandex:full-text>$descr</yandex:full-text>
70. <comments></comments>
71. $strPic
72. $strLink
73. </item>
74. TXT;
75. }
76. }
77. }
78. /*
79. картинки
80. <enclosure url="http://www.rossiyskie-novosti.ru/2003/03/25/yandex.jpg" type="image/jpeg"/>
81. ссылки на сторонние ресурсы
82. <yandex:related>
83. <link url="http://www.kremlin.ru/">Президент России</link>
84. </yandex:related>
85. */
86. $content .= '</channel></rss>';
87. ?>