Support » Plugin: Yoast SEO » Error After Install Plugin


    I have install the plugin WordPress SEO by Yoast and afther this the plugin give this error:

    Warning: Cannot modify header information – headers already sent by (output started at /homez.666/pippos/www/wp-admin/includes/template.php:1642) in /homez.666/pippos/www/wp-includes/pluggable.php on line 876

    And the Sitemap generate with the same plugin, in Google give me a error 404.

    Can you fix this?


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