Default Spring Boot Error Page

Occurred: Fri Oct 20 00:04:54 HKT 2017

Response Status: 500 (Internal Server Error)

Cause: org.thymeleaf.exceptions.TemplateInputException Request processing failed; nested exception is org.thymeleaf.exceptions.TemplateInputException: Error resolving template "frontend/index_by_status", template might not exist or might not be accessible by any of the configured Template Resolvers
Note: You would never generate a page that displays a Java exception to an end-user in a real application

You are seeing this error page due to Spring Boot (which returns a view called "error" in response to uncaught exceptions. Since we are using Thymeleaf this corresponds to the template error.html )