正如上面所说：我目前正在运行WP 5.6（在PHP 7.4.13和CentOS 7.9.2009的基础上），我收到了一个通知，WP 5.6.1可用，我应该升级。我正在通过；立即升级“；升级核心上的按钮。php，并获取：
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正在检查调试。日志，我发现：
[04-Feb-2021 21:48:11 UTC] PHP Warning: require(/var/www/html/example/wp-content/upgrade/version-current.php):
failed to open stream: No such file or directory in
/var/www/html/example/wp-admin/includes/update-core.php on line 949
[04-Feb-2021 21:48:11 UTC] PHP Fatal error: require(): Failed opening required
\'/var/www/html/example/wp-content/upgrade/version-current.php\'
(include_path=\'.:/usr/share/pear:/usr/share/php:/var/www/html/example/wp-content/plugins/ssh-sftp-updater-support/phpseclib/\')
in /var/www/html/example/wp-admin/includes/update-core.php on line 949
错误正确：wp内容/升级/版本当前没有文件。php——事实上，没有；升级"；wp content下的子目录。我有点迷路了；有人知道发生了什么事吗？我可能知道什么？谢谢
