Symptoms:
The Swagger documentation for vRealize Automation or VMware Aria Automation loading a blank page https://FQDN/automation-ui/api-docs
The browser is configured in other language than English.
This is caused when
VMware is aware of this issue and it will be fixed on 8.12.2
Upgrade to 8.12.2 or use the workaround.
Change the language of your browser to English.