Git报错 unable to access 'https://github.com/tjuHaoXiaotian/pymarl3.git/': Failed to connect to github.com port 443 after 21094 ms: Couldn't connect to server unable to access ‘https://github.com/tjuHaoXiaotian/pymarl3.git/’: Failed to connect to github.com port 443 after 21094 ms: Couldn’t connect to server 找到电脑代理: 修改git端口号: 找到 然后输入:git config --global http.proxy http://127.0.0.1:你自己的端口号(红色框部分) 然后运行解决