OrangeHill Article: How to fix the «Invalid Document» / «Element 'resource': The attribute 'title' is required but missing» failure in Magento 2.2?

01

How to fix

File: app/code/OrangeHill/Article/etc/acl.xml
Replace the line:

<resource id="Magento_Adminhtml::admin">

with the following one:

<resource id="Magento_Backend::admin">

See also: magento.stackexchange.com/a/195091

See also: