Developed a user-friendly login error notification feature for the RocketChat/EmbeddedChat repository, focusing on enhancing the authentication user experience. The work centered on clarifying login failures by providing actionable, clear messages to users, which reduced confusion and supported quicker resolution of sign-in issues. This targeted UX improvement aligned with product goals to streamline authentication flows and improve overall user satisfaction. The implementation demonstrated strong front-end development skills using React and JavaScript, with attention to robust error handling patterns and commit-driven workflows. No major bugs were reported or fixed during this period, as the effort was dedicated to a focused feature enhancement.