Your configuration files are not serializable

I run php artisan config:cache On my terminal I got the message 'configuration cache cleared" but aloso a LogicalExpectation

`Configuration cache cleared!

LogicException

Your configuration files are not serializable.

at C:\xampp\htdocs\Pharmacy-management-system\vendor\laravel\framework\src\Illuminate\Foundation\Console\ConfigCacheCommand.php:71 67▕ require $configPath; 68▕ } catch (Throwable $e) { 69▕ $this->files->delete($configPath); 70▕ ➜ 71▕ throw new LogicException('Your configuration files are not serializable.', 0, $e); 72▕ } 73▕ 74▕ $this->info('Configuration cached successfully!'); 75▕ }

1 C:\xampp\htdocs\Pharmacy-management-system\bootstrap\cache\config.php:173 Error::("Call to undefined method Closure::__set_state()")

2 C:\xampp\htdocs\Pharmacy-management-system\vendor\laravel\framework\src\Illuminate\Foundation\Console\ConfigCacheCommand.php:67 require()` How to fix this problem , thank you .