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I'm making a custom Wordpress theme. At some point, the "Customize" page in the admin panel has completely broken, giving me tons of these errors:

Notice: Trying to get property 'post_status' of non-object in /var/www/html/wp-admin/includes/template.php on line 2233

Notice: Trying to get property 'post_status' of non-object in /var/www/html/wp-admin/includes/template.php on line 2237

Notice: Trying to get property 'post_status' of non-object in /var/www/html/wp-admin/includes/template.php on line 2243

Notice: Trying to get property 'post_status' of non-object in /var/www/html/wp-admin/includes/template.php on line 2247

Notice: Trying to get property 'ID' of non-object in /var/www/html/wp-admin/includes/template.php on line 2251

Notice: Trying to get property 'post_status' of non-object in /var/www/html/wp-admin/includes/template.php on line 2255

Notice: Trying to get property 'ID' of non-object in /var/www/html/wp-admin/includes/template.php on line 2260

Notice: Trying to get property 'ID' of non-object in /var/www/html/wp-admin/includes/template.php on line 2264

Notice: Trying to get property 'ID' of non-object in /var/www/html/wp-admin/includes/template.php on line 2269

My page seems to work just fine otherwise, I don't get any warnings anywhere else.

How do I even begin to debug this?

1 Answer 1

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I figured this out while writing the question, but I thought I'd post it anyway since I couldn't find the answer to this on Google.

It turns out I had deleted a page at some point, but I had a menu item that still pointed to that deleted page. That menu item caused all these errors.

Deleting the invalid menu item fixed the issue.

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