Support » Plugin: Meta Tag Manager » Error: Cannot declare class MTM_Builder

  • Anita C


    Hi, we just received a SiteGround email notification:

    Error Details
    An error of type E_ERROR was caused in line 5 of the file /home/XXXXXX/public_html/wp-content/plugins/meta-tag-manager/mtm-builder.php. Error message: Cannot declare class MTM_Builder, because the name is already in use

    WordPress 5.2.2
    Genesis Framework
    Child Theme: Mai LifeStyle Pro

    Thanks in advance,


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  • Plugin Author Marcus


    Hi Anita, this basically means you either have loaded our plugin twice somehow, or your theme or another plugin has a class with the same name (meaning there’s a conflict)

    You can test easily for a conflict by trying my WP Safe Mode plugin to test MTM with other plugins and theme disabled only for yourself.

    Anita C


    Thanks for replying back so quickly @netweblogic, I will go try that now.

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