bug #12489 Build fix Change int to string in GenerateCouponsCommand (…

…Tomanhez)

This PR was merged into the 1.8 branch.

Discussion
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| Q               | A
| --------------- | -----
| Branch?         | 1.8
| Bug fix?        | yes
| New feature?    | no
| BC breaks?      | no
| Deprecations?   | no
| License         | MIT

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Commits
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4791286 Change int to string

src/Sylius/Bundle/PromotionBundle/Command/GenerateCouponsCommand.php

@@ -50,7 +50,7 @@ protected function configure(): void
             ->setDescription('Generates coupons for a given promotion')
             ->addArgument('promotion-code', InputArgument::REQUIRED, 'Code of the promotion')
             ->addArgument('count', InputArgument::REQUIRED, 'Amount of coupons to generate')
-            ->addOption('length', 'len', InputOption::VALUE_OPTIONAL, 'Length of the coupon code (default 10)', 10)
+            ->addOption('length', 'len', InputOption::VALUE_OPTIONAL, 'Length of the coupon code (default 10)', '10')
         ;
     }