Urgent: Kirby collapsed

Kirby 3
1

I changed title and path of an entry. Now, the whole page collapsed and does not load anymore. What happened and how can I fix this issue?

2

You probably called this page via id at some point without checking if that page exists.

Does reverting the change help?

Is debugging active? What’s the error message?

3

Thanks. I downloaded the entire site. Locally, it works. After editing, I will upload the entire site replacing the old one.

4

As @stffr already pointed out correctly, when working with objects, you always have to check if they exists before you call a member method. That is a very important rules to internalize:

For example, instead of doing this (big no-no)

<?= page('blog/my-post')->url(); ?>

Always do it like this

<?php if ($p = page('blog/my-post')) {
  echo $p->url();
}
?>

In PHP 8, you can also do it like this (when the context allows)

<?= page('blog/my-post')?->url(); ?>
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