Redis cache exception with automatic relation loading enabled

[boris-glumpler]

Laravel Version

12.8.1

PHP Version

8.4.5

Database Driver & Version

No response

Description

When you have Model::automaticallyEagerLoadRelationships() activated and use Redis for the cache backend and try to cache a model, then you get a Serialization of 'Closure' is not allowed exception. This might happen with other cache drivers as well, but I haven't tested this. It works as expected as soon as you comment out Model::automaticallyEagerLoadRelationships().

Steps To Reproduce

• Install https://github.com/boris-glumpler/bug-report
• Run php artisan serve
• Access the default route and see the exception
• Comment out Model::automaticallyEagerLoadRelationships() in AppServiceProvider
• Reload default route and see user data as expected

[macropay-solutions]

Might be related #53655 (comment) and they said it is already fixed but not deployed
#53655 (comment)

[boris-glumpler]

Nice one! I'll leave it open for now, so it won't get reported again.

[litvinchuk]

@boris-glumpler Fix released in v12.9.0