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Undefined offset: 0 – Plugin conflict.

  • Hello, I’m using the Advanced Post Type Order plugin and there seems to be a conflict with a (ACF) relationship field I have set up on a project.

    I understand this may be a conflict on the other plugin, but I’m wondering if there’s anything I can do to resolve this issue. The bug only happens when debug mode is on and it doesn’t seem to break anything, but I want to fix it none the less and am wondering if anyone has something in mind.

    I’m using the code mentioned under basic loop here.

    The error I get is:

    Notice: Undefined offset: 0 in /wp-content/plugins/advanced-post-types-order/advanced-post-types-order.php on line 180

    Any help here would be greatly appreciated.


  • Hi @david

    The error is definitely coming from the advanced-post-types-order plugin which this forum is not for,

    I’m curious to know why you believe this error is connected to the relationship field from the ACF plugin?


  • Late reply! Sorry… the reason I thought it was connected was due to the fact that it only happens when I use the relationship field and loop through it on a template file.

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