presencelight: Error when attempting to run Blazor version on a Mac

When I attempt to run the Blazor version 2.0.82 on Mac OS 10.14.6, I’m encountering the following error: A fatal error was encountered. The library 'libhostpolicy.dylib' required to execute the application was not found in '/Users/xxx/2.0.82_macOS/'. Failed to run as a self-contained app.

To launch it, I’m running dotnet PresenceLight.exe - I added the .exe extension to the executable since running ‘dotnet PresenceLight’ returned the following error:

Could not execute because the specified command or file was not found.
Possible reasons for this include:
  * You misspelled a built-in dotnet command.
  * You intended to execute a .NET program, but dotnet-PresenceLight does not exist.
  * You intended to run a global tool, but a dotnet-prefixed executable with this name could not be found on the PATH.

In case it’s helpful, here’s the output from dotnet --info

.NET SDK (reflecting any global.json):
 Version:   5.0.100-preview.6.20318.15
 Commit:    4356580024

Runtime Environment:
 OS Name:     Mac OS X
 OS Version:  10.14
 OS Platform: Darwin
 RID:         osx.10.14-x64
 Base Path:   /usr/local/share/dotnet/sdk/5.0.100-preview.6.20318.15/

Host (useful for support):
  Version: 5.0.0-preview.6.20305.6
  Commit:  4ba9ecaabd

.NET SDKs installed:
  3.1.301 [/usr/local/share/dotnet/sdk]
  5.0.100-preview.6.20318.15 [/usr/local/share/dotnet/sdk]

.NET runtimes installed:
  Microsoft.AspNetCore.App 3.1.5 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 5.0.0-preview.6.20312.15 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 2.0.9 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 3.1.5 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 5.0.0-preview.6.20305.6 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]

Any pointers on what I might be doing wrong?