After : php bin/magento setup:upgrade
I get this error
There is an error in /domain/app/code/Amasty/Base/Model/LicenceService/Api/RequestManager.php at line: 56
Amasty\Base\Model\LicenceService\Api\RequestManager::registerInstance(): Return value must be of type Amasty\Base\Model\LicenceService\Response\Data\RegisteredInstance, none returned#0 /domain/app/code/Amasty/Base/Model/SysInfo/Command/LicenceService/RegisterLicenceKey.php(93): Amasty\Base\Model\LicenceService\Api\RequestManager->registerInstance('domain...', 'cdbe7198-98f3-4...')
#1 [internal function]: Amasty\Base\Model\SysInfo\Command\LicenceService\RegisterLicenceKey->execute()
#2 /domain/vendor/magento/framework/App/State.php(187): call_user_func_array(Array, Array)
#3 /domain/app/code/Amasty/Base/Setup/RecurringData.php(103): Magento\Framework\App\State->emulateAreaCode('crontab', Array)
#4 /domain/app/code/Amasty/Base/Setup/RecurringData.php(91): Amasty\Base\Setup\RecurringData->processInstanceRegistration()
#5 /domain/setup/src/Magento/Setup/Model/Installer.php(1120): Amasty\Base\Setup\RecurringData->install(Object(Magento\Setup\Module\DataSetup), Object(Magento\Setup\Model\ModuleContext))
#6 /domain/setup/src/Magento/Setup/Model/Installer.php(963): Magento\Setup\Model\Installer->handleDBSchemaData(Object(Magento\Setup\Module\DataSetup), 'data', Array)
#7 /domain/setup/src/Magento/Setup/Console/Command/UpgradeCommand.php(147): Magento\Setup\Model\Installer->installDataFixtures(Array, true)
#8 /domain/vendor/symfony/console/Command/Command.php(298): Magento\Setup\Console\Command\UpgradeCommand->execute(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#9 /domain/vendor/symfony/console/Application.php(1040): Symfony\Component\Console\Command\Command->run(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#10 /domain/vendor/symfony/console/Application.php(301): Symfony\Component\Console\Application->doRunCommand(Object(Magento\Setup\Console\Command\UpgradeCommand), Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#11 /domain/vendor/magento/framework/Console/Cli.php(116): Symfony\Component\Console\Application->doRun(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#12 /domain/vendor/symfony/console/Application.php(171): Magento\Framework\Console\Cli->doRun(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#13 /domain/bin/magento(23): Symfony\Component\Console\Application->run()
#14 {main}