Declaration of Illuminate\Container\Container::get($id) must be compatible with Psr\Container\ContainerInterface::get(string $id)

痛苦的BUG折腾了一个下午!!!
第一步Google, 得到链接: https://stackoverflow.com/questions/66526288/declaration-of-illuminate-container-containergetid-must-be-compatible-with
以为so easy, 然后看自己的composer.json上面写着: “psr/container”: “1.0.0”
过了很久很久,看了很多文...