我安装了这个插件https://wordpress.org/plugins/wp-gallery-custom-links/在安装过程中遇到一个错误，在刷新页面之前我没有时间阅读。
现在我的媒体选择器根本没有加载。
我完全删除了插件，但没有运气，现在我甚至无法再联系到wp管理员。获取错误，如：
Warning: Cannot modify header information - headers already sent by (output started at /var/www/vhosts/xxxx.com/httpdocs/wp-content/themes/caroli/functions.php:1) in /var/www/vhosts/xxxx.com/httpdocs/wp-includes/pluggable.php on line 1196
Warning: Cannot modify header information - headers already sent by (output started at /var/www/vhosts/xxxxx.com/httpdocs/wp-content/themes/caroli/functions.php:1) in /var/www/vhosts/xxxx.com/httpdocs/wp-login.php on line 425
Warning: Cannot modify header information - headers already sent by (output started at /var/www/vhosts/xxxxxx.com/httpdocs/wp-content/themes/caroli/functions.php:1) in /var/www/vhosts/xxxxx.com/httpdocs/wp-login.php on line 438
Warning: Cannot modify header information - headers already sent by (output started at /var/www/vhosts/xxxxxx.com/httpdocs/wp-content/themes/caroli/functions.php:1) in /var/www/vhosts/xxxxxx.com/httpdocs/wp-login.php on line 425
Warning: Cannot modify header information - headers already sent by (output started at /var/www/vhosts/xxxx.com/httpdocs/wp-content/themes/caroli/functions.php:1) in /var/www/vhosts/xxxxxx.com/httpdocs/wp-login.php on line 438
Warning: Cannot modify header information - headers already sent by (output started at /var/www/vhosts/caroli.hosterspace.com/httpdocs/wp-content/themes/caroli/functions.php:1) in /var/www/vhosts/xxxxxxx.com/httpdocs/wp-includes/pluggable.php on line 925
Warning: Cannot modify header information - headers already sent by (output started at /var/www/vhosts/xxxxxxxxx.com/httpdocs/wp-content/themes/caroli/functions.php:1) in /var/www/vhosts/xxxxx.com/httpdocs/wp-includes/pluggable.php on line 926
Warning: Cannot modify header information - headers already sent by (output started at /var/www/vhosts/xxxxxx.com/httpdocs/wp-content/themes/caroli/functions.php:1) in /var/www/vhosts/xxxxxx.com/httpdocs/wp-includes/pluggable.php on line 927
Warning: Cannot modify header information - headers already sent by (output started at /var/www/vhosts/xxxxxxxx.com/httpdocs/wp-content/themes/caroli/functions.php:1) in /var/www/vhosts/xxxxxx.com/httpdocs/wp-includes/pluggable.php on line 1196
我下载了wordpress的新副本，并替换了wp-admin文件夹、wp-includs文件夹、wp-config.php文件、wp-login.php文件。
我尝试过更改插件文件夹上的名称，但仍然不起作用，我尝试过删除我的主题以访问wp管理员，但仍然没有起作用。
我怀疑这可能是数据库，但我没能找到问题。。有人能帮忙吗？
我已经多次遇到这个问题，正如Vaviloff所说，在文件的开头（<?php之前）放置一个空格是您想要的
一些可能的原因：
- 损坏的插件
- 腐朽的主题
- Wordpress安装中的入侵（您会在文件的开头看到一些eval（））
可能的解决方案：
- 检查相关文件：/var/www/vhosts/xxxx.com/httpdocs/wp-content/themes/caolli/functions.php:1并移除
<?php之前的空间 - 禁用你安装的最新插件，看看它是否有任何作用
- 运行像Wordfence这样的插件（以防万一），它会扫描你的文件比手动更快，并使用WP core检查差异或查找可疑代码（免费版本可以完成所有这些）
编辑：我刚刚看到你无法联系到wp管理员。这很棘手，但我也遇到过同样的问题。嗯，这是一次入侵（由于一个过时的插件）
我做了什么？
- 我主题的备份
- 我数据库的备份
- 我上传的备份
- 已安装插件的列表
- 更改了所有密码
- 删除了服务器的所有相关部分（在所有备份之后）
- 重新安装新WP
- 恢复的主题/DB/uploads/plugins（安装插件时检查插件的最后更新）
- 已安装Wordfence，以防万一
Cannot modify header information - headers already sent by
意味着在到达脚本末尾之前，某些文件中已经有一些文本发送到浏览器。
output started at /var/www/vhosts/xxxx.com/httpdocs/wp-content/themes/caroli/functions.php:1
检查该文件，在<?php代码开始声明之前，文件的开头可能有一个空格。
我在文件的开头没有空格，可能罪魁祸首是UTF BOM，你应该在文本编辑器的帮助下删除它，例如Notepad++可以选择这样做（编码->转换为UTF-8）。