Trying to get property 'noChildren' of non-object

[sms]

Hello to the forum,

since recently I get this notice when I create a new page with definded parent templates and children templates:

Notice: Trying to get property 'noChildren' of non-object in D:\xampp\htdocs\processwire-dev-3.0.170\wire\modules\PagePermissions.module on line 821

Line 821 of PagePermissions.module says:

if($page->template->noChildren) {
...

Any idea of what I could do or causes this notice?

Thank you very much in advance.

[Kholja]

This notice can happen if you use a page reference field in your template which has a wrong defined (i.e. deleted) parent page dependency.

In my case I had a blog-post template which contained a page reference field to category pages. Additionally I had a parent page defined containing the categories. The error occured when I deleted this parent page.

[sms]

Sorry for my late reply, so much to do. I just had to write to you cause your idea helped me thinking in the right direction. Thanks again! ?