Question How to avoid ML-Agents project error messages?

How to avoid ML-Agents project error messages?


Whenever I open the ML-Agents project
He will jump out of the ECONNRESET error


And display errors in the project

Code (CSharp):

1. An error occurred while resolving packages:
2.   One or more packages could not be added to the local file system:
3.     com.unity.sysroot: Cannot connect to 'download.packages.unity.com' (error code: ECONNRESET). Verify your environment firewall policies allow connection to this host name. If your system is behind a proxy, verify your proxy environment variables (HTTP_PROXY and HTTPS_PROXY) are properly set.
4.     com.unity.sysroot.linux-x86_64: Cannot connect to 'download.packages.unity.com' (error code: ECONNRESET). Verify your environment firewall policies allow connection to this host name. If your system is behind a proxy, verify your proxy environment variables (HTTP_PROXY and HTTPS_PROXY) are properly set.
5.     com.unity.toolchain.macos-x86_64-linux-x86_64: Cannot connect to 'download.packages.unity.com' (error code: ECONNRESET). Verify your environment firewall policies allow connection to this host name. If your system is behind a proxy, verify your proxy environment variables (HTTP_PROXY and HTTPS_PROXY) are properly set.
6.  
7. A re-import of the project may be required to fix the issue or a manual modification of D:/MYWORK/unityProjects/unity3d_ml_test/Project/Packages/manifest.json file.
8.  

How should this error be resolved?
Thank you everyone