Call to a member function toRenderArray()

@arif.zisu Can you share a full backtrace for the above error?

When an error occurs, the getSections() method returns an array containing arrays.

In my case, the getSections() method should return an array of objects of the Drupal\layout_builder\Section type. That's why the toRenderArray() method is missing.

In the code, I found a place where the array with arrays is replaced with an array with the Section object.

It is located in the src/Entity/LayoutBuilderStorage.php file in the mapFromStorageRecords() method.

$sections = array_map([Section::class, 'fromArray'], $sections);

But I haven't found a reason yet why it sometimes doesn't change. I suspect the cache.

I prepared a patch to force reprocessing into arrays of objects.