I am deploying my Symfony 4 app to the production environment for the first time using rsync.

I then try to run the doctrine:migrations:migrate command.

php -v : PHP 5.6.40

CentOS: 7.6

EasyApache4

When I execute:

```
bin/console doctrine:migrations:migrate

```

I received the following error:

```
Fatal error: Default value for parameters with a class type hint can only be NULL in /home/simpleit/ch.simpleitsolutions.bookings/vendor/symfony/console/Application.php on line 85

```

I understand that Symfony 4 DoctrineMigrationsBundle requires PHP 7.1 so I also tried the following:

```
/usr/bin/ea-php71 bin/console doctrine:migrations:migrate

```

And I received the following error:

```
WARNING! You are about to execute a database migration that could result in schema changes and data loss. Are you sure you wish to continue? (y/n)[2019-02-10 12:10:52] console.ERROR: Error thrown while running command "{command}". Message: "{message}" {"exception":"[object] (Symfony\\Component\\Console\\Exception\\RuntimeException(code: 0): Aborted at /home/<account_dir>/vendor/symfony/console/Helper/QuestionHelper.php:129)","command":"doctrine:migrations:migrate","message":"Aborted"} []

```

Thank you in advance