TemplateInputException: Error Resolving Template

[SudharakaP]

Describe the bug

It was observed in production the following error;

 org.thymeleaf.exceptions.TemplateInputException: Error resolving template [api/github/callback], template might not exist or might not be accessible by any of the configured Template Resolvers

        at org.thymeleaf.engine.TemplateManager.resolveTemplate (TemplateManager.java:869)
        at org.thymeleaf.engine.TemplateManager.parseAndProcess (TemplateManager.java:607)
        at org.thymeleaf.TemplateEngine.process (TemplateEngine.java:1098)
        at org.thymeleaf.TemplateEngine.process (TemplateEngine.java:1072)
        at org.thymeleaf.spring5.view.ThymeleafView.renderFragment (ThymeleafView.java:362)
        at org.thymeleaf.spring5.view.ThymeleafView.render (ThymeleafView.java:189)

Additional context

I believe that this problem is the same as that mentioned here; spring-projects/spring-boot#2057 and spring-projects/spring-boot#1744

[SudharakaP]

For this one we will try out the following solution; spring-projects/spring-boot#2057 (comment)