我在laravel.log中有很多错误，每4-5秒出现2个错误。
错误如下：

[2020-12-09 16:37:09] production.ERROR: Connection refused {"exception":"[object] (RedisException(code: 0): Connection refused at /home/ubuntu/myuser/vendor/laravel/framework/src/Illuminate/Redis/Connectors/PhpRedisConnector.php:141)
[stacktrace]

# 0 /home/ubuntu/myuser/vendor/laravel/framework/src/Illuminate/Redis/Connectors/PhpRedisConnector.php(141): Redis->connect()

# 1 /home/ubuntu/myuser/vendor/laravel/framework/src/Illuminate/Redis/Connectors/PhpRedisConnector.php(84): Illuminate\\Redis\\Connectors\\PhpRedisConnector->establishConnection()

# 2 /home/ubuntu/myuser/vendor/laravel/framework/src/Illuminate/Support/helpers.php(263): Illuminate\\Redis\\Connectors\\PhpRedisConnector->Illuminate\\Redis\\Connectors\\{closure}()

# 3 /home/ubuntu/myuser/vendor/laravel/framework/src/Illuminate/Redis/Connectors/PhpRedisConnector.php(109): tap()

# 4 /home/ubuntu/myuser/vendor/laravel/framework/src/Illuminate/Redis/Connectors/PhpRedisConnector.php(28): Illuminate\\Redis\\Connectors\\PhpRedisConnector->createClient()

# 5 [internal function]: Illuminate\\Redis\\Connectors\\PhpRedisConnector->Illuminate\\Redis\\Connectors\\{closure}()

# 6 /home/ubuntu/myuser/vendor/laravel/framework/src/Illuminate/Redis/Connections/PhpRedisConnection.php(541): call_user_func()

# 7 /home/ubuntu/myuser/vendor/laravel/framework/src/Illuminate/Redis/Connections/PhpRedisConnection.php(272): Illuminate\\Redis\\Connections\\PhpRedisConnection->command()

# 8 /home/ubuntu/myuser/vendor/laravel/horizon/src/Repositories/RedisSupervisorRepository.php(39): Illuminate\\Redis\\Connections\\PhpRedisConnection->zrevrangebyscore()

# 9 /home/ubuntu/myuser/vendor/laravel/horizon/src/Repositories/RedisSupervisorRepository.php(50): Laravel\\Horizon\\Repositories\\RedisSupervisorRepository->names()

# 10 /home/ubuntu/myuser/vendor/laravel/horizon/src/Repositories/RedisSupervisorRepository.php(99): Laravel\\Horizon\\Repositories\\RedisSupervisorRepository->all()

# 11 /home/ubuntu/myuser/vendor/laravel/horizon/src/MasterSupervisor.php(165): Laravel\\Horizon\\Repositories\\RedisSupervisorRepository->longestActiveTimeout()

# 12 /home/ubuntu/myuser/vendor/laravel/horizon/src/ListensForSignals.php(52): Laravel\\Horizon\\MasterSupervisor->terminate()

# 13 /home/ubuntu/myuser/vendor/laravel/horizon/src/MasterSupervisor.php(237): Laravel\\Horizon\\MasterSupervisor->processPendingSignals()

# 14 /home/ubuntu/myuser/vendor/laravel/horizon/src/MasterSupervisor.php(212): Laravel\\Horizon\\MasterSupervisor->loop()

# 15 /home/ubuntu/myuser/vendor/laravel/horizon/src/Console/HorizonCommand.php(56): Laravel\\Horizon\\MasterSupervisor->monitor()

# 16 /home/ubuntu/myuser/vendor/laravel/framework/src/Illuminate/Container/BoundMethod.php(36): Laravel\\Horizon\\Console\\HorizonCommand->handle()

# 17 /home/ubuntu/myuser/vendor/laravel/framework/src/Illuminate/Container/Util.php(40): Illuminate\\Container\\BoundMethod::Illuminate\\Container\\{closure}()

# 18 /home/ubuntu/myuser/vendor/laravel/framework/src/Illuminate/Container/BoundMethod.php(93): Illuminate\\Container\\Util::unwrapIfClosure()

# 19 /home/ubuntu/myuser/vendor/laravel/framework/src/Illuminate/Container/BoundMethod.php(37): Illuminate\\Container\\BoundMethod::callBoundMethod()

# 20 /home/ubuntu/myuser/vendor/laravel/framework/src/Illuminate/Container/Container.php(610): Illuminate\\Container\\BoundMethod::call()

# 21 /home/ubuntu/myuser/vendor/laravel/framework/src/Illuminate/Console/Command.php(136): Illuminate\\Container\\Container->call()

# 22 /home/ubuntu/myuser/vendor/symfony/console/Command/Command.php(255): Illuminate\\Console\\Command->execute()

# 23 /home/ubuntu/myuser/vendor/laravel/framework/src/Illuminate/Console/Command.php(121): Symfony\\Component\\Console\\Command\\Command->run()

# 24 /home/ubuntu/myuser/vendor/symfony/console/Application.php(971): Illuminate\\Console\\Command->run()

# 25 /home/ubuntu/myuser/vendor/symfony/console/Application.php(290): Symfony\\Component\\Console\\Application->doRunCommand()

# 26 /home/ubuntu/myuser/vendor/symfony/console/Application.php(166): Symfony\\Component\\Console\\Application->doRun()

# 27 /home/ubuntu/myuser/vendor/laravel/framework/src/Illuminate/Console/Application.php(93): Symfony\\Component\\Console\\Application->run()

# 28 /home/ubuntu/myuser/vendor/laravel/framework/src/Illuminate/Foundation/Console/Kernel.php(129): Illuminate\\Console\\Application->run()

# 29 /home/ubuntu/myuser/artisan(37): Illuminate\\Foundation\\Console\\Kernel->handle()

# 30 {main}

"}

这是我的配置：

'redis' => [

        'client' => env('REDIS_CLIENT', 'phpredis'),

        'options' => [
            'cluster' => env('REDIS_CLUSTER', 'redis'),
            'prefix' => env('REDIS_PREFIX', Str::slug(env('APP_NAME', 'laravel'), '_') . '_database_'),
        ],

        'default' => [
            'url' => env('REDIS_URL'),
            'host' => env('REDIS_HOST', '127.0.0.1'),
            'password' => env('REDIS_PASSWORD', null),
            'port' => env('REDIS_PORT', '6379'),
            'database' => env('REDIS_DB', '0'),
        ],

        'cache' => [
            'url' => env('REDIS_URL'),
            'host' => env('REDIS_HOST', '127.0.0.1'),
            'password' => env('REDIS_PASSWORD', null),
            'port' => env('REDIS_PORT', '6379'),
            'database' => env('REDIS_CACHE_DB', '1'),
        ],

    ],

在my.env中：

REDIS_HOST=127.0.0.1
REDIS_PASSWORD=MyPassword
REDIS_PORT=6379

下面是堆栈：
地平线版本：5.6.0
laravel版本：8.17.0
php版本：7.4.3
redis驱动程序及版本：predis/phpredis 5.0.7/1.1.6
数据库驱动程序版本：postgres 12
我该怎么做才能摆脱他们？