我在outdoor2.launch中，把sdf换成了自己的模型，但是gazebo卡在黑屏加载界面不动 I changed sdf in outdoor2.launch, but gazebo launch failed at preparing world. <img width="768" height="599" alt="Image" src="https://github.com/user-attachments/assets/0e8f05cf-bcdf-438b-9209-6ad0df81e0bb" /> <img width="1500" height="1060" alt="Image" src="https://github.com/user-attachments/assets/81b4205a-fb38-471f-aec7-eef87b714e3b" /> <img width="1238" height="156" alt="Image" src="https://github.com/user-attachments/assets/26d9078c-8942-46d7-9148-158c0e23fafb" />
我在outdoor2.launch中，把sdf换成了自己的模型，但是gazebo卡在黑屏加载界面不动
I changed sdf in outdoor2.launch, but gazebo launch failed at preparing world.