WordPress报错：preg_match() Compilation failed 错误解决方法

WordPress报错：preg_match() Compilation failed 错误解决方法

关键词：WordPress报错、preg_match Compilation failed、WordPress Warning preg_match、class-wp.php line 239、WordPress正则表达式错误、WordPress固定链接错误、WordPress Rewrite Rule

前几天在维护一个 WordPress 站点时，页面突然无法正常访问，打开网站直接出现两条醒目的 Warning 提示：

Warning: preg_match(): Compilation failed: quantifier does not follow a repeatable item at offset 1 in /www/wwwroot/dooo.fun/wp-includes/class-wp.php on line 239 Warning: preg_match(): Compilation failed: quantifier does not follow a repeatable item at offset 1 in /www/wwwroot/dooo.fun/wp-includes/class-wp.php on