installation fail v8 in php 7 laravel 7

[SurajTiwari007]

Error
Class name must be a valid object or a string

at C:\xampp\htdocs\UjitaJobPortal\vendor\spatie\laravel-medialibrary\src\MediaLibraryServiceProvider.php:23
19| $this->registerPublishables();
20|
21| $mediaClass = config('media-library.media_model');
22|

23| $mediaClass::observe(new MediaObserver());
24|
25| $this->loadViewsFrom(DIR.'/../resources/views', 'media-library');
26| }
27|

1 C:\xampp\htdocs\UjitaJobPortal\vendor\laravel\framework\src\Illuminate\Container\BoundMethod.php:32
Spatie\MediaLibrary\MediaLibraryServiceProvider::boot()

2 C:\xampp\htdocs\UjitaJobPortal\vendor\laravel\framework\src\Illuminate\Container\BoundMethod.php:32
call_user_func_array([])
Script @php artisan package:discover --ansi handling the post-autoload-dump event returned with error code 1

Installation failed, reverting ./composer.json to its original content.

[i-defranca]

same here

[Demers94]

I had the same problem and solved it by using php artisan config:clear

[SurajTiwari007]

I had the same problem and solved it by using php artisan config:clear

i fired this command but error will be same

[alibarthi]

Hi,

Have you followed all the steps in the Upgrade Guide?

[hirenkeraliya]

@alibarthi
The fresh installation also not works.

[chrisbjr]

Happened to me too after migrating from v7 to v8. I had to delete all the contents bootstrap/cache (except the .gitignore file). The error disappeared after this.

[scheMeZa]

Can't require medialibrary in a new laravel 7 project. Getting the following before composer restores the original composer.json file.

    - Can only install one of: symfony/process[4.4.x-dev, v5.0.5].
    - Can only install one of: symfony/process[v4.4.0, v5.0.5].
    - Can only install one of: symfony/process[v4.4.0-BETA1, v5.0.5].
    - Can only install one of: symfony/process[v4.4.0-BETA2, v5.0.5].
    - Can only install one of: symfony/process[v4.4.0-RC1, v5.0.5].
    - Can only install one of: symfony/process[v4.4.1, v5.0.5].
    - Can only install one of: symfony/process[v4.4.2, v5.0.5].
    - Can only install one of: symfony/process[v4.4.3, v5.0.5].
    - Can only install one of: symfony/process[v4.4.4, v5.0.5].
    - Can only install one of: symfony/process[v4.4.5, v5.0.5].
    - Can only install one of: symfony/process[v4.4.6, v5.0.5].
    - Can only install one of: symfony/process[v4.4.7, v5.0.5].
    - Can only install one of: symfony/process[v4.4.8, v5.0.5].
    - Installation request for symfony/process (locked at v5.0.5) -> satisfiable by symfony/process[v5.0.5].

[JayAhrDe]

@scheMeZa Had the same error (that should not be related to the one of this issue, though ;) ) -- it worked after enabling gd2 and exif, that had not been enabled in that installed PHP version... Found those by running composer update after failed composer require.

[MahbodHastam]

i saw all issues and forums... but still have this problem :/