setup:upgrade: Call to a member function getBackend() on bool

[tim-breitenstein-it]

When upgrading MageSuite BrandManagement v1.9.2 to v1.9.3 (or higher) an error during setup:upgrade occurs:

Call to a member function getBackend() on bool
#0 /var/www/magento/vendor/creativestyle/magesuite-brand-management/Model/ResourceModel/Brands.php(94): MageSuite\BrandManagement\Model\ResourceModel\Brands->removeAttributeForStore()
#1 /var/www/magento/generated/code/MageSuite/BrandManagement/Model/ResourceModel/Brands/Interceptor.php(59): MageSuite\BrandManagement\Model\ResourceModel\Brands->removeAttribute()
#2 /var/www/magento/vendor/creativestyle/magesuite-brand-management/Model/BrandsRepository.php(118): MageSuite\BrandManagement\Model\ResourceModel\Brands\Interceptor->removeAttribute()
#3 /var/www/magento/vendor/creativestyle/magesuite-brand-management/Service/Upgrade/Migration.php(109): MageSuite\BrandManagement\Model\BrandsRepository->save()
#4 /var/www/magento/vendor/creativestyle/magesuite-brand-management/Service/Upgrade/Migration.php(74): MageSuite\BrandManagement\Service\Upgrade\Migration->transferXmlContentToJson()
#5 /var/www/magento/vendor/creativestyle/magesuite-brand-management/Service/Upgrade/Migration.php(65): MageSuite\BrandManagement\Service\Upgrade\Migration->setJsonValueForItemsInCollection()
#6 [internal function]: MageSuite\BrandManagement\Service\Upgrade\Migration->MageSuite\BrandManagement\Service\Upgrade\{closure}()
#7 /var/www/magento/vendor/magento/framework/App/State.php(187): call_user_func_array()
#8 /var/www/magento/generated/code/Magento/Framework/App/State/Interceptor.php(68): Magento\Framework\App\State->emulateAreaCode()
#9 /var/www/magento/vendor/creativestyle/magesuite-brand-management/Service/Upgrade/Migration.php(67): Magento\Framework\App\State\Interceptor->emulateAreaCode()
#10 /var/www/magento/vendor/creativestyle/magesuite-brand-management/Setup/Patch/Data/MigrateContentConfigToJsonFormat.php(17): MageSuite\BrandManagement\Service\Upgrade\Migration->transferOldXmlValuesToNewJsonFields()
#11 /var/www/magento/vendor/magento/framework/Setup/Patch/PatchApplier.php(162): MageSuite\BrandManagement\Setup\Patch\Data\MigrateContentConfigToJsonFormat->apply()
#12 /var/www/magento/setup/src/Magento/Setup/Model/Installer.php(1094): Magento\Framework\Setup\Patch\PatchApplier->applyDataPatch()
#13 /var/www/magento/setup/src/Magento/Setup/Model/Installer.php(960): Magento\Setup\Model\Installer->handleDBSchemaData()
#14 /var/www/magento/setup/src/Magento/Setup/Console/Command/UpgradeCommand.php(147): Magento\Setup\Model\Installer->installDataFixtures()
#15 /var/www/magento/vendor/symfony/console/Command/Command.php(255): Magento\Setup\Console\Command\UpgradeCommand->execute()
#16 /var/www/magento/vendor/symfony/console/Application.php(1021): Symfony\Component\Console\Command\Command->run()
#17 /var/www/magento/vendor/symfony/console/Application.php(275): Symfony\Component\Console\Application->doRunCommand()
#18 /var/www/magento/vendor/magento/framework/Console/Cli.php(115): Symfony\Component\Console\Application->doRun()
#19 /var/www/magento/vendor/symfony/console/Application.php(149): Magento\Framework\Console\Cli->doRun()
#20 /var/www/magento/bin/magento(23): Symfony\Component\Console\Application->run()
#21 {main}

PHP Fatal error:  Uncaught Exception: User Error: Some transactions have not been committed or rolled back in /var/www/magento/vendor/magento/framework/DB/Adapter/Pdo/Mysql.php on line 4050 in /var/www/magento/vendor/magento/framework/App/ErrorHandler.php:61
Stack trace:
#0 [internal function]: Magento\Framework\App\ErrorHandler->handler()
#1 /var/www/magento/vendor/magento/framework/DB/Adapter/Pdo/Mysql.php(4050): trigger_error()
#2 [internal function]: Magento\Framework\DB\Adapter\Pdo\Mysql->__destruct()
#3 {main}
  thrown in /var/www/magento/vendor/magento/framework/App/ErrorHandler.php on line 61

Magento: v2.4.3-p3
Magesuite: v10.1.0
Brand Management Extension: v1.9.2 to v1.9.3