Worked on stabilizing the Mastodon CLI upgrade workflow within the mastodon/mastodon repository by addressing a persistent ArgumentError encountered during storage-schema upgrades. Focused on CLI development and error handling using Ruby, the developer identified and corrected parameter passing issues in upgrade-related method calls. This targeted fix reduced the risk of upgrade failures and improved deployment reliability for administrators managing schema changes. The work demonstrated a methodical debugging approach and a strong grasp of Ruby-based CLI tooling. Although the period involved no new feature development, the contribution enhanced operational confidence and ensured smoother upgrade processes for production environments using Mastodon.