后台进不去，instantupgrade这个插件在哪里删除啊
我升级2.6之后就有这些问题
Warning: Cannot modify header information - headers already sent by (output started at /home/syzczq/domains/syzczq.host5.meyu.net/public_html/blog/wp-config.php:1) in /home/syzczq/domains/syzczq.host5.meyu.net/public_html/blog/wp-login.php on line 260
Warning: Cannot modify header information - headers already sent by (output started at /home/syzczq/domains/syzczq.host5.meyu.net/public_html/blog/wp-config.php:1) in /home/syzczq/domains/syzczq.host5.meyu.net/public_html/blog/wp-login.php on line 272
Warning: Cannot modify header information - headers already sent by (output started at /home/syzczq/domains/syzczq.host5.meyu.net/public_html/blog/wp-config.php:1) in /home/syzczq/domains/syzczq.host5.meyu.net/public_html/blog/wp-includes/pluggable.php on line 595
Warning: Cannot modify header information - headers already sent by (output started at /home/syzczq/domains/syzczq.host5.meyu.net/public_html/blog/wp-config.php:1) in /home/syzczq/domains/syzczq.host5.meyu.net/public_html/blog/wp-includes/pluggable.php on line 596
Warning: Cannot modify header information - headers already sent by (output started at /home/syzczq/domains/syzczq.host5.meyu.net/public_html/blog/wp-config.php:1) in /home/syzczq/domains/syzczq.host5.meyu.net/public_html/blog/wp-includes/pluggable.php on line 597
Warning: Cannot modify header information - headers already sent by (output started at /home/syzczq/domains/syzczq.host5.meyu.net/public_html/blog/wp-config.php:1) in /home/syzczq/domains/syzczq.host5.meyu.net/public_html/blog/wp-includes/pluggable.php on line 770
看到有人说要禁用这个插件
但是我后台进不去，怎么禁用插件啊~！！而且我没有装过这个插件，我把我wp-content下的plugins里面的东西都删了，还是没有用，怎么禁用这个插件啊
在线等，急
