컴퓨터를 구입하면서 새 컴퓨터에 이동하여 설치중입니다.  워드프레스는 4.5 (유료테마와 호환성으로인해) 사용중입니다.

그런데 새컴퓨터에서 이동중 다음과 같은 메세지가 뜨면서 홈페이지가 오픈이 되질 않습니다.

-------------------------- (kbaord4.4 comments 3.6)

Warning: mysql_query(): Access denied for user ''@'localhost' (using password: NO) in D:hosting/name/public_html/wordpress/wp-content/plugins/kboard/index.php on line 502

Warning: mysql_query(): A link to the server could not be established in D:hosting/name/public_html/wordpress/wp-content/plugins/kboard/index.php on line 502
.

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기존데이터에 대한 아이디와 비번을 동일하게 이동시켰습니다.

FTP로 플로그인 kboard 5.2 / comments 4.3 으로 업로드 하니

Warning: include_once(class/KBCommentController.class.php): failed to open stream: No such file or directory in D:hosting/name/public_html/wordpress/wp-content/plugins/kboard-comments/index.php on line 22

Warning: include_once(): Failed opening 'class/KBCommentController.class.php' for inclusion (include_path='.') in D:hosting/name/public_htmlwordpress/wp-content/plugins/kboard-comments/index.php on line 22

Warning: include_once(class/KBCommentTemplate.class.php): failed to open stream: No such file or directory in D:hosting/name/public_html/wordpress/wp-content/plugins/kboard-comments/index.php on line 26

Warning: include_once(): Failed opening 'class/KBCommentTemplate.class.php' for inclusion (include_path='.') in D:hosting/name/public_html/wordpress/wp-content/plugins/kboard-comments/index.php on line 26

Fatal error: Uncaught Error: Class 'KBCommentController' not found in D:hosting/name/public_html/wordpress/wp-content/plugins/kboard-comments/index.php:36 Stack trace: #0 D:hosting/name/public_html/wordpress/wp-includes/plugin.php(525): kboard_comments_init('') #1 D:hostingnamepublic_htmlwordpresswp-settings.php(393): do_action('init') #2 D:hostingnamepublic_htmlwordpresswp-config.php(90): require_once('D:\hosting\name...') #3 D:hostingnamepublic_htmlwordpresswp-load.php(37): require_once('D:\hosting\name...') #4 D:hostingnamepublic_htmlwordpresswp-blog-header.php(13): require_once('D:\hosting\name...') #5 D:hostingnamepublic_htmlwordpressindex.php(17): require('D:\hosting\name...') #6 {main} thrown in D:hostingnamepublic_htmlwordpresswp-contentpluginskboard-commentsindex.php on line 36

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혹시 이 에러메세지에 대한 조언을 들을 수 있을까요?