Fatal error: Declaration of Drupal\lightning_core\ConfigEntityDescriptionTrait::getDescription() must be compatible with Drupal\Core\Entity\EntityDisplayModeBase::getDescription(): string

I have resolved the issue & added patch, please review.

Must add string as Type of function getDescription()

public function getDescription() :string {
You can simply add (string) in return

return (string) $this->getThirdPartySetting('lightning_core', 'description');

Environment
- PHP8.2
- D10.2

I have resolved the issue with the provided changes.

Patch without the header informations :)

The patch shared in #9 applies smoothly. Thanks for the patch @Goldfit

+1 to patch in #9.

We came across the same error after upgrading to Drupal core 10.2.
The patch provided by #9 fixed the issue.
Please add this to a new stable release.

After upgrading to Drupal core 10.2 we also came across the same error.
Patch #9 fixed the issue.

I am also facing the same issue after upgrade Drupal 10.2.2 with PHP 8.2 and tried this patch #9, the issue fixed now and site was working fine.

The patch in #9 worked for me as well, upgrading to 10.2 with PHP 8.1. Thanks!

Created MR for quick merge.

I ran into this issue with the `lightning_core` module following an upgrade of Drupal from version 10.1.8 to 10.3.1. Unfortunately, patch number 9 was ineffective for me because I needed to fix both functions in the `ConfigEntityDescriptionTrait.php` file. The patch provided below resolved the problem and I will create a Merge Request to make it permanent.

It is now tested, +1 for RTBC. Even $ drush en lightning_core results in an exception which makes the entire site unusable.

• lightning_core: 6.0.x-dev
• Core: 10.3.1
• PHP: 8.3.9

Unfortunately, the main repo still believes 8.x-5.x as the default branch. However, a newer version of this module has already been released from another branch with a higher version number (6.x). This confusion caused both merge requests here still target the “legacy” 8.x-5.x branch. Only users opening the MR are allowed to re-target to the correct development HEAD – I did not find an option on GitLab GUI to do so.

Also, marking as a blocker of #3369498: Automated Drupal 11 compatibility fixes for lightning_core + enable GitLab CI.

@drupalam, sorry to be weighing in on this late in the game, but we have in core/lib/Drupal/Core/Entity/EntityDescriptionInterface.php the following:

 /**
     * Sets the entity description.
     *
     * @param string $description
     *   The entity description.
     *
     * @return $this
     */
    public function setDescription($description);

It seems that setDescription() returns $this (an EntityDescriptionInterface), so trying to coerce the result to a string as in #21 is going to give a type error, unless I'm missing something.

@puregin was correct! Here’s a solution to this

Hi - just a double confirmation note from my side, that the 2 comments above are correct. #20 worked for me, #27 should work too, the #21 results with an error when saving new View Mode.

Late to this party, but I just ran into this upgrading a D9 site. #27 worked for me on 10.5.1. Always grateful when fixes are so easy to find. THANKS!

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