array_merge(): Argument #1 must be of type array, null given

  • Hi,

    I am experiencing critical issues with the WooCommerce product tabs functionality, particularly when using the YITH WooCommerce Tab Manager plugin.

    Issue Summary:

    • Product tabs are not displaying correctly, and I am receiving PHP errors related to?array_merge()?and?woocommerce_product_tabs?filters.
    • I have attempted to debug the issue, including modifying plugin files, adjusting filter priorities, and disabling other conflicting plugins.

    Steps Taken to Resolve:

    1. Disabled other product tab plugins (Yikes Custom Product Tabs).
    2. Increased the priority of the?woocommerce_product_tabs?filter in the YITH Tab Manager plugin.
    3. Verified no conflicts with the WooCommerce core.
    4. Ensured WooCommerce is up to date (currently on version 9.6.0).
    5. Attempted to fix outdated WooCommerce templates in my theme (Ambient theme).

    Current Errors:

    • NOTICE: PHP message: PHP Fatal error:? Uncaught TypeError: array_merge(): Argument #1 must be of type array, null given in /site/wp-content/plugins/yith-woocommerce-tab-manager/includes/class-yith-tab-manager-frontend.php:53"

    System Details:

    • WooCommerce version: 9.6.0
    • WordPress version: 6.4.3
    • PHP version: 8.1
    • Active theme: Ambient (with outdated WooCommerce template overrides) [Removed overrides and tried again]

    Plugins Involved:

    • WooCommerce
    • YITH WooCommerce Tab Manager
    • Yikes Custom Product Tabs (disabled)

    Despite these efforts, the issue persists. Kindly assist me in resolving this as it is affecting my product pages and user experience.

    Thank you for your support.

    Best Regards,

Viewing 2 replies - 1 through 2 (of 2 total)
  • Plugin Support Alberto Martin

    (@albertomrtn)

    Hi @brunomaxx, exactly when does the error occur? I have tested in my local environment with the latest versions and I don’t have any error, could you try with a default theme and check if the problem continues?

    Thread Starter brunomaxx

    (@brunomaxx)

    Hi @albertomrtn, we are using a child theme with ACF fields, so if I try to use a default theme it will break the website. But for example Yikes Custom Product Tabs when active, is recognised in the woocommerce product side tab. Yith simply does not show up.

Viewing 2 replies - 1 through 2 (of 2 total)
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