Worked on the-events-calendar/tribe-common repository to enhance reliability in the Harbor license resolution process during early plugin initialization. Addressed a critical stability issue by introducing a defensive guard in PHP, ensuring that the Uplink::get_plugins() function is only called after proper initialization. This backend development effort prevented fatal errors that previously occurred when legacy license resolution paths were triggered before Uplink was ready, particularly during Promoter PUE license lookups. The solution involved adding an existence check within register_legacy_licenses(), effectively reducing runtime crashes and maintaining expected behavior for Harbor-enabled workflows while improving the robustness of early load scenarios.