Worked on the canonical/prometheus-k8s-operator repository to enhance system stability by addressing misconfiguration scenarios. Focused on backend development using Python, the work involved implementing robust error handling for invalid log_level inputs by transitioning the operator to a blocked state and providing clear user feedback. Automated unit tests were added to validate the configuration process and ensure resilience against future misconfigurations. Additionally, dependency tooling was updated by aligning Charm libraries with the new operator behavior. This effort prioritized maintainability and reliability, emphasizing thorough test coverage and clear communication to users when configuration errors occur, thereby improving the overall robustness of the operator.