project itself and mmdet3d numpy incompatible ; predict demo vedio completely different from the official one

[fanyongx]

I configured the environment according to the instructions and ran the project, but numpy reported an error. I changed numpy to 1.20.0 but it was incompatible with mmdet3d. How to solve it? The video I ran was completely different from the official one. Was it a problem with numpy?(我按照指导配好环境后运行项目，但是numpy报错，我将numpy换为1.20.0却和mmdet3d不兼容，该如何解决，以及我跑出来的视频和官方提供的完全不一样，是numpy的问题吗?)


these trajectories are completely wrong(这些轨迹完全是错误的)



please hlep me! Thank you!