CAS 6.1.0 RC6 OAuth2 clients aren't displayed on the login page

[Dmitry Malinin]

I have configured OAuth2 clients in my cas.properties, but they aren't displayed on the login page.

This is fragment from my cas.log:

2019-09-10 10:27:45,571 ERROR [org.thymeleaf.TemplateEngine] - <[THYMELEAF][https-jsse-nio-8443-exec-3] Exception processing template "casLoginView": Error resolving template [fragments/insecure], template might not exist or might not be accessible by any of the configured Template Resolvers (template: "casLoginView" - line 24, col 18)>org.thymeleaf.exceptions.TemplateInputException: Error resolving template [fragments/insecure], template might not exist or might not be accessible by any of the configured Template Resolvers (template: "casLoginView" - line 24, col 18)