NET Core SDKs installed:

name -a
Linux localhost.localdomain 4.20.0-1.nk.3.x86_64 #1 SMP Fri Jan 25 08:58:11 CST 2019 x86_64 x86_64 x86_64 GNU/Linux

dotnet --info
.NET Core SDK (reflecting any global.json):
Version: 3.1.300
Commit: b2475c1295

Runtime Environment:
OS Name: neokylin
OS Version: 6.0
OS Platform: Linux
RID: linux-x64
Base Path: /usr/share/dotnet/sdk/3.1.300/

Host (useful for support):
Version: 3.1.4
Commit: 0090613580

.NET Core SDKs installed:
3.0.103 [/usr/share/dotnet/sdk]
3.1.300 [/usr/share/dotnet/sdk]

.NET Core runtimes installed:
Microsoft.AspNetCore.App 3.0.3 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 3.1.4 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.NETCore.App 3.0.3 [/usr/share/dotnet/shared/Microsoft.NETCore.App]
Microsoft.NETCore.App 3.1.4 [/usr/share/dotnet/shared/Microsoft.NETCore.App]

dotnet demo.dll
Cannot get required symbol ECDSA_sign from libssl Aborted