Support » Plugin: Yoast SEO » Installation error – Cannot modify header information

  • Hi,
    Never had problems installing Yoast SEO tools on other sites before.
    On a new site I’m building, when I install and activate the plugin, I get the following message

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

    I then cannot access the ‘Titles and Meta Descriptions’ tab under the Yoast tools section

    Help please!

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  • When I go to the ‘Titles and Metas’ tab, the screen is blank, with an error message in the bottom right corner:

    Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 30720 bytes) in /home/cabinetm/public_html/wp-includes/SimplePie/Content/Type/Sniffer.php on line 283

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