Видео ютуба по тегу The Lower Bound Of "Sdk: '=2.7.0 3.0.0'" Must Be 2.12.0' Or Higher To Enable Null Safety.

🚫 Error: The lower bound of
🚫 Error: The lower bound of "sdk: '=2.7.0 - 3.0.0'" must be 2.12.0 or higher to enable null safety