You need to select "Send Welcome Email" on Emails Menu
Please, take into account the following:
Salesforce sends welcome emails when:
A community changes from Preview status to Active status. An inactive community doesn’t receive emails unless the associated org has a default portal or if the user’s profile is part of an active portal.
An admin ...
You need to use the DistributionPublicUrl in the ContentDistribution record that corresponds to the file's ContentVersion record.
This URL can be used in img tags in HTML.
ContentDistribution is created when you create a Public Link from the file's action menu in the UI. You can also create them in Apex.
I had the same issue with forceCommunity:themeProfileMenu
https://trailblazers.salesforce.com/answers?id=9064S000000CmW5QAK. It appeared that I had 2 theme layouts which contained forceCommunity:themeProfileMenu. Initially I updated pages that used the "Default" theme layout with the new Customized User Profile component but the error persisted. ...