Compile Error On Magento 2.2.9 CE

Issue:

I have installed version 2.2.0 on Magento 2.2.9 CE and I am getting the following error in the terminal when running setup:di:compile:

Fatal error: Access level to Bss\MultiStoreViewPricingTierPrice\Model\Product\Attribute\Backend\Tierprice\UpdateHandler::$groupManagement must be protected (as in class Magento\Catalog\Model\Product\Attribute\Backend\TierPrice\UpdateHandler) or weaker in /app/code/Bss/MultiStoreViewPricingTierPrice/Model/Product/Attribute/Backend/Tierprice/UpdateHandler.php on line 298

Solution:

Could you please edit and upload the attachment file to override to the file path app/code/Bss/MultiStoreViewPricingTierPrice/Model/Product/Attribute/Backend/Tierprice/UpdateHandler.php?

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