I've upgraded my site from v2.3.1 to v2.3.6 and I now get the error:
Reference to undeclared plugin with name 'priceIndexUpdater'
in my system.log.
I've found that in vendor\magento\module-inventory-catalog\etc\di.xml there is the line
<plugin name="priceIndexUpdater" disabled="true"/>
Why is the plugin disabled when it is needed. Any ideas what will happen if I delete the line?