Stack traces, sequences of stack frames representing method calls, are crucial for debugging software errors, and Rollbar processes over 70 million daily, enhancing their utility by linking them to data sources and integrating with SCM tools like GitHub. Stack traces differ across programming languages, with Java traces typically longer due to boilerplate code, while Python traces are shorter, often because Python is used for scripting rather than full-scale applications. Rollbar distinguishes between project and non-project frames, collapsing the latter to focus investigation on user code, using a combination of user-provided data and a blocklist of common file paths. Recent updates have improved non-project frame detection, particularly in Java, significantly reducing the noise in stack traces and making user code more visible, with over 80% of Java errors seeing improvements. Future updates are planned to enhance non-project frame handling in other languages like JavaScript, Go, C#, and PHP.