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default.xml showing error "Cannot resolve symbol 'string'" in PHP Storm IDE, but it's not effecting anything. Is this ok? Or is there something wrong?

Error

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As you can see in the first line phpStorm does not know the XSD schemas.

You can either add this manually (open settings and search for DTS) or run:

bin/magento dev:urn-catalog:generate .idea/misc.xml

Ref.: https://devdocs.magento.com/guides/v2.0/config-guide/cli/config-cli-subcommands-urn.html

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