突然图片就加载很慢了，基本一张图片要好几分钟才出来   日志如下：

17:03:12 preg_replace(): Unknown modifier 'p' in /var/www/html/zentaopms/module/mail/model.php on line 276 when visiting /index.php?m=bug&f=resolve&bugID=8115&onlybody=yes

17:03:12 Message body empty in /var/www/html/zentaopms/module/mail/model.php on line 298 when visiting /index.php?m=bug&f=resolve&bugID=8115&onlybody=yes

17:03:12 Message body empty in /var/www/html/zentaopms/module/bug/control.php on line 1121 when visiting /index.php?m=bug&f=resolve&bugID=8115&onlybody=yes

17:04:35 preg_replace(): Unknown modifier 'p' in /var/www/html/zentaopms/module/mail/model.php on line 276 when visiting /index.php?m=bug&f=create&productID=13&extra=moduleID=192

17:04:35 Message body empty in /var/www/html/zentaopms/module/mail/model.php on line 298 when visiting /index.php?m=bug&f=create&productID=13&extra=moduleID=192

17:04:35 Message body empty in /var/www/html/zentaopms/module/bug/control.php on line 1121 when visiting /index.php?m=bug&f=create&productID=13&extra=moduleID=192

17:05:12 ERROR: SQLSTATE[42S02]: Base table or view not found: 1146 Table 'zentao.zt_cron' doesn't existThe sql is: SELECT MAX(id) AS id FROM `zt_cron` in /var/www/html/zentaopms/lib/dao/dao.class.php on line 1058, last called by /var/www/html/zentaopms/lib/dao/dao.class.php on line 511 through function sqlError.
 in /var/www/html/zentaopms/framework/router.class.php on line 1567 when visiting /index.php?m=convert&f=index

17:06:29 ERROR: SQLSTATE[42S02]: Base table or view not found: 1146 Table 'zentao.zt_cron' doesn't existThe sql is: SELECT MAX(id) AS id FROM `zt_cron` in /var/www/html/zentaopms/lib/dao/dao.class.php on line 1058, last called by /var/www/html/zentaopms/lib/dao/dao.class.php on line 511 through function sqlError.
 in /var/www/html/zentaopms/framework/router.class.php on line 1567 when visiting /index.php?m=convert&f=index

17:06:31 preg_replace(): Unknown modifier 'p' in /var/www/html/zentaopms/module/mail/model.php on line 276 when visiting /index.php?m=bug&f=resolve&bugID=8120&onlybody=yes

17:06:31 收件人没有设置邮箱，请到组织视图中检查下相应用户的email设置。 in /var/www/html/zentaopms/module/mail/model.php on line 298 when visiting /index.php?m=bug&f=resolve&bugID=8120&onlybody=yes

17:06:31 收件人没有设置邮箱，请到组织视图中检查下相应用户的email设置。 in /var/www/html/zentaopms/module/bug/control.php on line 1121 when visiting /index.php?m=bug&f=resolve&bugID=8120&onlybody=yes

17:07:57 收件人没有设置邮箱，请到组织视图中检查下相应用户的email设置。 in /var/www/html/zentaopms/module/mail/model.php on line 298 when visiting /index.php?m=bug&f=resolve&bugID=8140&onlybody=yes

17:07:57 收件人没有设置邮箱，请到组织视图中检查下相应用户的email设置。 in /var/www/html/zentaopms/module/bug/control.php on line 1121 when visiting /index.php?m=bug&f=resolve&bugID=8140&onlybody=yes

17:10:32 preg_replace(): Unknown modifier 'p' in /var/www/html/zentaopms/module/mail/model.php on line 276 when visiting /index.php?m=bug&f=assignTo&bugID=7785&onlybody=yes

17:10:32 收件人没有设置邮箱，请到组织视图中检查下相应用户的email设置。 in /var/www/html/zentaopms/module/mail/model.php on line 298 when visiting /index.php?m=bug&f=assignTo&bugID=7785&onlybody=yes

17:10:32 收件人没有设置邮箱，请到组织视图中检查下相应用户的email设置。 in /var/www/html/zentaopms/module/bug/control.php on line 1121 when visiting /index.php?m=bug&f=assignTo&bugID=7785&onlybody=yes

17:13:59 preg_replace(): Unknown modifier 'p' in /var/www/html/zentaopms/module/mail/model.php on line 276 when visiting /index.php?m=bug&f=resolve&bugID=8138&onlybody=yes

17:13:59 收件人没有设置邮箱，请到组织视图中检查下相应用户的email设置。 in /var/www/html/zentaopms/module/mail/model.php on line 298 when visiting /index.php?m=bug&f=resolve&bugID=8138&onlybody=yes

17:13:59 收件人没有设置邮箱，请到组织视图中检查下相应用户的email设置。 in /var/www/html/zentaopms/module/bug/control.php on line 1121 when visiting /index.php?m=bug&f=resolve&bugID=8138&onlybody=yes

17:15:01 preg_replace(): Unknown modifier 'p' in /var/www/html/zentaopms/module/mail/model.php on line 276 when visiting /index.php?m=bug&f=resolve&bugID=8122&onlybody=yes

17:15:01 收件人没有设置邮箱，请到组织视图中检查下相应用户的email设置。 in /var/www/html/zentaopms/module/mail/model.php on line 298 when visiting /index.php?m=bug&f=resolve&bugID=8122&onlybody=yes

17:15:01 收件人没有设置邮箱，请到组织视图中检查下相应用户的email设置。 in /var/www/html/zentaopms/module/bug/control.php on line 1121 when visiting /index.php?m=bug&f=resolve&bugID=8122&onlybody=yes

17:16:32 preg_replace(): Unknown modifier 'p' in /var/www/html/zentaopms/module/mail/model.php on line 276 when visiting /index.php?m=bug&f=assignTo&bugID=8101&onlybody=yes

17:16:32 Message body empty in /var/www/html/zentaopms/module/mail/model.php on line 298 when visiting /index.php?m=bug&f=assignTo&bugID=8101&onlybody=yes

17:16:32 Message body empty in /var/www/html/zentaopms/module/bug/control.php on line 1121 when visiting /index.php?m=bug&f=assignTo&bugID=8101&onlybody=yes

17:21:03 preg_replace(): Unknown modifier 'p' in /var/www/html/zentaopms/module/mail/model.php on line 276 when visiting /index.php?m=bug&f=resolve&bugID=7785&onlybody=yes

17:21:03 Message body empty in /var/www/html/zentaopms/module/mail/model.php on line 298 when visiting /index.php?m=bug&f=resolve&bugID=7785&onlybody=yes

17:21:03 Message body empty in /var/www/html/zentaopms/module/bug/control.php on line 1121 when visiting /index.php?m=bug&f=resolve&bugID=7785&onlybody=yes

17:22:55 收件人没有设置邮箱，请到组织视图中检查下相应用户的email设置。 in /var/www/html/zentaopms/module/mail/model.php on line 298 when visiting /index.php?m=bug&f=resolve&bugID=8155&onlybody=yes

17:22:55 收件人没有设置邮箱，请到组织视图中检查下相应用户的email设置。 in /var/www/html/zentaopms/module/bug/control.php on line 1121 when visiting /index.php?m=bug&f=resolve&bugID=8155&onlybody=yes

17:28:44 preg_replace(): Unknown modifier 'p' in /var/www/html/zentaopms/module/mail/model.php on line 276 when visiting /index.php?m=bug&f=activate&bugID=7748&onlybody=yes

17:28:44 收件人没有设置邮箱，请到组织视图中检查下相应用户的email设置。 in /var/www/html/zentaopms/module/mail/model.php on line 298 when visiting /index.php?m=bug&f=activate&bugID=7748&onlybody=yes

17:28:44 收件人没有设置邮箱，请到组织视图中检查下相应用户的email设置。 in /var/www/html/zentaopms/module/bug/control.php on line 1121 when visiting /index.php?m=bug&f=activate&bugID=7748&onlybody=yes