Call to a member function structure() on null

[Robinvm]

Bug Description

I suddenly get the error: Call to a member function structure() on null

Statamic\Structures\CollectionTree::Statamic\Structures{closure} vendor/statamic/cms/src/Structures/CollectionTree.php:19

return Blink::once('collection-tree-structure-'.$this->handle(), function () {

   ERROR====> return Collection::findByHandle($this->handle())->structure();

});

How to Reproduce

I made a new collection, and after that pages collection started to do this. When i save it says saved, save again, error, save again, saved, save again, error.

Extra Detail

Environment

Statamic 3.1.3 Pro
Laravel 8.35.1
PHP 7.4.16
cnj/seotamic 2.0.3
pecotamic/sitemap 1.2.1

Statamic version: 3.0.{?}
3.1.3 Pro

PHP version: 7.4.16

Install method (choose one):

• Fresh install from statamic/statamic THIS ONE
• Starter kit
• Existing Laravel app
• Other (please explain this magic!)

[duncanmcclean]

So you created a new collection, then you went back to your Pages collection and it gave you that error? Correct?

Also, when you get the error, are you in the CP or in the front-end?

[taylorcammack]

Having a similar issue, but different scenario so hopefully could provide some insight.

In my case, just migrated from a V2 site. Created the Pages collection, started seeing this error pop up. After refreshing, it seems to work correctly. After deleting the page, it throws a similar console error. In both cases, refreshing seems to clear things up.

Screen.Recording.2021-04-20.at.10.08.42.AM.mov

Environment

Statamic 3.1.9 Solo
Laravel 7.30.4
PHP 7.4.15
aryehraber/statamic-captcha 1.4.0
encore/app dev-master
spatie/statamic-responsive-images 2.5.3
statamic/migrator dev-master

[taylorcammack]

Looks like it also throws the error after every page update. Resolves on a refresh. Any idea for where to start poking around?

[robdekort]

Getting a similar issue on the site I'm working. It happens when warming the stache here.

[robdekort]

And when saving pages

[Robinvm]

I got a fix for it. In the tree directory, i deleted the pages.yaml or something, it just regenerated and now it works correctly on my side. Not the best fix i guess, but it works.

[robdekort]

Hmmm, doesn't seem to work here. I just loose my page tree ;-)

[Robinvm]

Yes but then just save a page and it regenerates

[robdekort]

Ah! I removed content/trees/pages.yaml while the issue was with content/trees/projects.yaml. It just contained:

{ }

Projects was as a structured collection before and then later I turned it into a date based collections. This seems to leave behind a nearly empty tree file which causes this error when warming the stache.

Hope it helps solving this one.

[robdekort]

I was able to reproduce this on a fresh install by:

1. Making a new orderable collection
2. Adding some entries so you get a tree
3. Turn collection into a non structured collection (date based for example)
4. Warm the stache.

If you use statamic-issue-3478.zip you'll get it for free. Just run php please stache:warm.

Switching to non structured collection should probably remove the tree collection.yaml file.

[DrTrills]

I have the same issue. New site install. in terminal if I run php please stache:warm

Warming Stache...

   Error

  Call to a member function structure() on null

  at vendor/statamic/cms/src/Structures/CollectionTree.php:19
     15▕ {
     16▕     public function structure()
     17▕     {
     18▕         return Blink::once('collection-tree-structure-'.$this->handle(), function () {
  ➜  19▕             return Collection::findByHandle($this->handle())->structure();
     20▕         });
     21▕     }
     22▕
     23▕     public function path()

      +8 vendor frames
  9   [internal]:0
      Statamic\Stache\Indexes\Value::Statamic\Stache\Indexes\{closure}()

      +26 vendor frames
  36  please:37
      Illuminate\Foundation\Console\Kernel::handle()

Also possibly related, in the CP when I click clear content stache I get a 500 error