Mouhannad Alshamali contributed to the ntop/ntopng repository by addressing a critical installation issue affecting macOS users. He identified that a previous commit had inadvertently removed the json-c dependency from the Homebrew installation script, which caused installation failures for both users and automated deployment systems. By updating the installation command to explicitly include the json-c dependency, Mouhannad restored stability to the setup process. His work focused on improving installation scripts and documentation, utilizing Markdown to clearly communicate changes. While the scope was limited to a single targeted bug fix, the solution demonstrated careful attention to deployment reliability and user experience.