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I get this: Warning: join() [function.join]: Invalid arguments passed in /wp-includes/post-template.ph

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I'm using the Pagelines framework with the Beardwell theme. Since yesterday I get this warning: Warning: join() [function.join]: Invalid arguments passed in /home/adminfinh/domains/finhealth.nl/public_html/wp-includes/post-template.php on line 387

class=""> When I deactivate the Beardwell theme it disappears.

Any ideas on how to fix this?

Many thanks,


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Hi Martjin,

I think the best course of action would be to first disable all non-PageLines plugins and see if this resolves your issue. If that doesn't, then contact Nick the developer of the theme. The contact information can be found on this page below.


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I think I know what caused it. If you don't select one of the themes (light/dark/cute) you get the warning. As soon as you select one the warning disappears.

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Hey There,

Sorry to hear you're having troubles. I double checked this locally and can't replicate the issues. I changed the name of the option here locally which essentially resets it, to test the default (non clicked). I didn't get any warnings or errors, and the default body class of beardwell-dark was applied.

I would go through and disable all plugins, and especially all sections to see if the issue persists.

Let me know how you go about.


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