I have included this line in my csproj

<Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Layout.props))\Layout.props" />

ERROR [2018-05-28 19:18:03Z]: MSBuild property evaluation failed: [MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Layout.props)
System.NullReferenceException: Object reference not set to an instance of an object
  at MonoDevelop.Projects.MSBuild.MSBuildEvaluationContext.ConvertArg (System.Reflection.MethodBase method, System.Int32 argNum, System.Object value, System.Type parameterType) [0x00164] in /Users/vsts/agent/2.133.3/work/1/s/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Projects.MSBuild/MSBuildEvaluationContext.cs:871 
  at MonoDevelop.Projects.MSBuild.MSBuildEvaluationContext.EvaluateMethod (System.String str, System.Reflection.MemberInfo[] member, System.Object instance, System.Object[] parameterValues, System.Object& val) [0x00104] in /Users/vsts/agent/2.133.3/work/1/s/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Projects.MSBuild/MSBuildEvaluationContext.cs:707 

It could be related to this:
#4928

Visual Studio Enterprise 2017 for Mac
Version 7.5.1 (build 22)
Installation UUID: ac2f5f5a-65c6-4e02-aae1-61d2ac9aabc1
Runtime:
Mono 5.10.1.47 (2017-12/8eb8f7d5e74) (64-bit)
GTK+ 2.24.23 (Raleigh theme)
Xamarin.Mac 4.4.1.178 (master / eeaeb7e6)

Package version: 510010047

NuGet
Version: 4.3.1.4445

.NET Core
Runtime: /usr/local/share/dotnet/dotnet
Runtime Versions:
2.0.5
2.0.3
2.0.0
1.1.2
1.1.1
1.0.5
1.0.4
1.0.3
SDK: /usr/local/share/dotnet/sdk/2.1.4/Sdks
SDK Versions:
2.1.4
2.0.3
2.0.0
1.0.3
1.0.1
1.0.0-preview2-003156
MSBuild SDKs: /Library/Frameworks/Mono.framework/Versions/5.10.1/lib/mono/msbuild/15.0/bin/Sdks

Xamarin.Profiler
Version: 1.6.3
Location: /Users/jmedrano/Projects/profiler/src/XamarinProfiler.Mac/bin/Debug/Xamarin Profiler.app/Contents/MacOS/Xamarin Profiler

Xamarin.Android
Version: 8.3.0.19 (Visual Studio Enterprise)
Android SDK: /Users/jmedrano/Library/Developer/Xamarin/android-sdk-macosx
Supported Android versions:
6.0 (API level 23)
8.1 (API level 27)

SDK Tools Version: 25.2.5
SDK Platform Tools Version: 26.0.0
SDK Build Tools Version: 25.0.3

Java SDK: /usr
java version "1.8.0_131"
Java(TM) SE Runtime Environment (build 1.8.0_131-b11)
Java HotSpot(TM) 64-Bit Server VM (build 25.131-b11, mixed mode)

Android Designer EPL code available here:
https://github.com/xamarin/AndroidDesigner.EPL

Xamarin Inspector
Version: 1.4.0
Hash: b3f92f9
Branch: master
Build date: Fri, 19 Jan 2018 22:00:34 GMT
Client compatibility: 1

Apple Developer Tools
Xcode 9.3.1 (14154.1)
Build 9E501

Xamarin.Mac
Version: 4.4.1.178 (Visual Studio Enterprise)

Xamarin.iOS
Version: 11.10.1.178 (Visual Studio Enterprise)
Hash: 408d3574
Branch: d15-7
Build date: 2018-05-08 18:56:30-0400

Build Information
Release ID: 705010022
Git revision: 60442dd
Build date: 2018-05-15 01:43:39+00
Xamarin addins: 4194ffe4868321e4c3477bd56aed579bda4c6fbb

Operating System
Mac OS X 10.13.4
Darwin 17.5.0 Darwin Kernel Version 17.5.0
Fri Apr 13 19:32:32 PDT 2018
root:xnu-4570.51.2~1/RELEASE_X86_64 x86_64

Enabled user installed addins
Gist Ide Information 1.1.0
AddinMaker 1.4.2
MSBuild Editor 2.0.3
NuGet Package Explorer 0.2
NuGet Package Management Extensions 0.12.6
Redth's Addins 1.0.9
Show in Github 1.0.4
VSMarketPlaceManager 1.0