Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
While using tag Salesforce Internal Error in Lightning with Gack Id -1475846362 is shown.
Why this might happen?
If you miss value parameter on ui:outputURL tag this error may occur.
Update: as sfdcfox suggests, this may also happen while missing a required attribute on a custom written component.
Required, but never shown