Jira issue originally created by user @johannessteu:
If you publish a workspace and the redirecthandler package is installed it will check if a redirect should be added. Therefore it generates the URL for that node. The node only contains the targetdimensions without possible fallbacks for the content dimensions. If there is no sitenode for that dimension the uriBuilder won't be able to generate a url and an exception is thrown.
Something similar is fixed with neos/neos-development-collection#512 for the PublishingService.
Jira-URL: https://jira.neos.io/browse/NEOS-1830