Error encountered when creating new plugin

[alexandrubau]

Upon trying to create a new plugin using the steps from here, I encounter the following error:

PHP Fatal error:  Declaration of Symfony\Component\HttpKernel\Bundle\Bundle::boot() must be compatible with EightPoints\Bundle\GuzzleBundle\PluginInterface::boot(): void in /var/www/html/src/Service/Api/Plugin/AuthorizationPlugin.php on line 37

and

PHP Fatal error:  Declaration of Symfony\Component\HttpKernel\Bundle\Bundle::build(Symfony\Component\DependencyInjection\ContainerBuilder $container) must be compatible with EightPoints\Bundle\GuzzleBundle\PluginInterface::build(Symfony\Component\DependencyInjection\ContainerBuilder $container): void in /var/www/html/src/Service/Api/Plugin/AuthorizationPlugin.php on line 54

This happens because the methods boot() and build() have return type set to void in EightPoints\Bundle\GuzzleBundle\PluginInterface but the Symfony\Component\HttpKernel\Bundle\Bundle class doesn't specify them.

Q	A
Symfony version	4.4
Bundle version	8.0

[alexandrubau]

Problem solved by downgrading Bundle Version from 8.0 to 7.5.

[gregurco]

@alexandrubau thank's for hint. Now you can use v8.