It was not possible to find any compatible framework version The framework 'Microsoft.NETCore.App'

问题：

It was not possible to find any compatible framework version
The framework 'Microsoft.NETCore.App', version '3.1.10' was not found.

原因： Microsoft.AspNetCore.App缺失/没有合适版本

解决办法：

https://dotnet.microsoft.com/download/dotnet-core?utm_source=getdotnetcorecli&utm_medium=referral

找到相应的版本，我的是netcore3.1，因此我用的是

https://dotnet.microsoft.com/download/dotnet-core/3.1

下载相应版本安装即可~

来源：oschina

链接：https://my.oschina.net/berzhuan/blog/4923157