Declaration of Spatie jsonSerialize() must be compatible with Illuminate\Support\Collection::jsonSerialize(): array

[gundogduyakici]

Symfony\Component\ErrorHandler\Error\FatalError

Declaration of Spatie\MediaLibrary\MediaCollections\Models\Collections\MediaCollection::jsonSerialize() must be compatible with Illuminate\Support\Collection::jsonSerialize(): array

C:\laragon\www\xxxx\vendor\spatie\laravel-medialibrary\src\MediaCollections\Models\Collections\MediaCollection .php : 51

Why am I getting this error?

My php version is 8.0
I use Laravel 9

[anhzf]

I'm facing this issue previously, then I upgrade the Laravel version and using the latest version laravel-medialibrary

composer require laravel/framework:^9.4
composer require spatie/laravel-medialibrary:^10.4.0

[erikn69]

laravel-medialibrary/src/MediaCollections/Models/Collections/MediaCollection.php

Line 57 in f64d461

public function jsonSerialize(): array

It has the same return type,
maybe you did have problems with instalation or with cache, try deletin spatie folder and composer update -W

[rezalabbafi]

I've installed vesrion "10.0.0"
I've just run composer update -W command
and this is the class it doesn't return array yet!!!!
public function jsonSerialize()
.
.
.
->keyBy('uuid');

[parallels999]

@rezalabbafi try to find what do you have on old($this->formFieldName ?? $this->collectionName)

laravel-medialibrary/src/MediaCollections/Models/Collections/MediaCollection.php

Line 63 in ff4a546

return old($this->formFieldName ?? $this->collectionName) ?? $this->map(function (Media $media) {

[madfortech]

composer update -W
w means ?