Wordfence 5.0.2 has been released and is a hotfix for the is_404() warning you're seeing and includes several other fixes.
Please upgrade and let me know if it resolves the issue for you.
Regards,
Mark.
Wordfence 5.0.2 has been released and is a hotfix for the is_404() warning you're seeing and includes several other fixes.
Please upgrade and let me know if it resolves the issue for you.
Regards,
Mark.