好多个网站错误日志提示重复定义

更新了最新版的wpjam后，好多个网站错误日志提示重复定义，但打开那个文件又没发现重复定义，这是啥情况

*130302 FastCGI sent in stderr: \"PHP message: PHP Fatal error:  Cannot redeclare wpjam_server_dashboard_widget_callback() (previously declared in /www/wwwroot/www.**.com/wp-content/plugins/wpjam-basic/admin/pages/server-status.php:43) in /www/wwwroot/www.**.com/wp-content/plugins/wpjam-basic/admin/pages/server-status.php on line 43\" while reading upstream, client: 119.123.103.13, server: www.**.com, request: \"GET /wp-admin/admin.php?page=server-status HTTP/2.0\", upstream: \"fastcgi://unix:/tmp/php-cgi-74.sock:\", host: \"www.**.com\", referrer: \"https://www.**.com/wp-admin/options-general.php?page=wpsupercache&tab=contents