.NETFramework not found in macOS

Issue Description

I get this message in the output of VSCode

[fail]: OmniSharp.MSBuild.ProjectLoader
 The reference assemblies for framework ".NETFramework,Version=v4.7.1" were not found. 
To resolve this, install the SDK or Targeting Pack for this framework version 
or retarget your application to a version of the framework for which you have the SDK or Targeting Pack installed. Note that assemblies will be resolved from the
Global Assembly Cache (GAC) and will be used in place of reference assemblies. Therefore your assembly may not be correctly targeted for the framework you intend.

Steps to Reproduce

Fresh macOS install, install the newest .NET SDK, install the newest VSCode with OmniSharp Start a Unity C# project

Expected Behavior

Actual Behavior

Logs

OmniSharp log

Post the output from Output-->OmniSharp log here

C# log

Post the output from Output-->C# here

Environment information

VSCode version: 1.33.1 C# Extension: 1.19.1

Mono Information

OmniSharp using built-in mono

Dotnet Information

.NET Core SDK (reflecting any global.json): Version: 2.2.106 Commit: aa79b139a8

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/2.2.106/

Host (useful for support): Version: 2.2.4 Commit: f95848e524

.NET Core SDKs installed: 2.2.106 [/usr/local/share/dotnet/sdk]

.NET Core runtimes installed: Microsoft.AspNetCore.All 2.2.4 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.All] Microsoft.AspNetCore.App 2.2.4 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.NETCore.App 2.2.4 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]

To install additional .NET Core runtimes or SDKs: https://aka.ms/dotnet-download

Visual Studio Code Extensions

Extension	Author	Version
atom-keybindings	ms-vscode	3.0.6
azure-account	ms-vscode	0.8.3
change-case	wmaurer	1.0.0
code-settings-sync	Shan	3.2.9
code-spell-checker	streetsidesoftware	1.7.10
csharp	ms-vscode	1.19.1
csharpfixformat	Leopotam	0.0.81
EditorConfig	EditorConfig	0.13.0
gremlins	nhoizey	0.9.0
ignore-gitignore	stubailo	1.0.1
Material-theme	zhuangtongfa	2.23.0
ruby	rebornix	0.22.3
seti-icons	qinjia	0.1.3
shaderlabvscodefree	amlovey	1.1.3
tabsanity	jedmao	0.0.11
terminal-tabs	Tyriar	0.2.0
unity-code-snippets	kleber-swf	1.3.0
unity-debug	Unity	2.7.2
vscode-open-in-sourcetree	morrislaptop	0.6.0
vscode-subword-navigation	ow	1.2.0
vscode-todo-plus	fabiospampinato	4.13.0
vscode-toggle-quotes	BriteSnow	0.3.2
vscode-unitymeta	PTD	0.0.5

[tomduncalf]

I fixed this by setting “Use global mono” to “always” in VS Code

[Ole-Skidos]

@tomduncalf I hope we meet one day so I can buy you a beer!, Tried everything for 4 hours and this did the final trick!