Issue:
We installed the extension successfully on M2.2.11 CE but on catalog price reindex we got an error
PHP Fatal error: Uncaught Error: Call to a member function registerTags() on null in /vendor/magento/module-catalog/Model/Indexer/Product/Price.php:80
Solution:
The root of the issue is that version 2.2.1 for M2.2.6-2.3.0 is not compatible with M2.2.11.
To solve it, we have fixed file
Bss\MultiStoreViewPricingPriceIndexer\Model\Indexer\Product\Price.php
Please apply the fix on the site.
If you need any further assistance, please feel free to contact us.
We're more than happy to support you.