WordPressで4.9.2にアップデートしたら管理画面にログインできなくなりました。
ログインの際に下記の警告が出ます。
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Warning: preg_match() [function.preg-match]: Compilation failed: unrecognized character after (?< at offset 4 in /public_html/wp-includes/wp-db.php on line 1657 Warning: Cannot modify header information - headers already sent by (output started at /public_html/wp-includes/wp-db.php:1657) in /public_html/wp-login.php on line 421 Warning: Cannot modify header information - headers already sent by (output started at /public_html/wp-includes/wp-db.php:1657) in /public_html/wp-login.php on line 434 Warning: Cannot modify header information - headers already sent by (output started at /public_html/wp-includes/wp-db.php:1657) in /public_html/wp-includes/pluggable.php on line 920 Warning: Cannot modify header information - headers already sent by (output started at /public_html/wp-includes/wp-db.php:1657) in /public_html/wp-includes/pluggable.php on line 921 Warning: Cannot modify header information - headers already sent by (output started at /public_html/wp-includes/wp-db.php:1657) in /public_html/wp-includes/pluggable.php on line 922 |