Unreal Engine 4.18.3 Source Release Compilation Error

Hi I’m trying to build the Unreal Engine from source and I keep getting the following compilation errors (detailed below). Any help in solving this issue will be really appreciated.
Thanks Michael

46>C:\Repositories\UnrealEngine\Engine\Source\Programs\AutomationTool\Android\ArchiveCommand.Automation.cs(65,28,65,51):
error CS0103: The name
‘CreateDeploymentContext’ does not
exist in the current context
46>C:\Repositories\UnrealEngine\Engine\Source\Programs\AutomationTool\Android\ArchiveCommand.Automation.cs(66,24,66,41):
error CS1579: foreach statement cannot
operate on variables of type ‘?’
because ‘?’ does not contain a public
definition for ‘GetEnumerator’
46>C:\Repositories\UnrealEngine\Engine\Source\Programs\AutomationTool\Android\ArchiveCommand.Automation.cs(77,28,77,51):
error CS0103: The name
‘CreateDeploymentContext’ does not
exist in the current context
46>C:\Repositories\UnrealEngine\Engine\Source\Programs\AutomationTool\Android\ArchiveCommand.Automation.cs(78,24,78,41):
error CS1579: foreach statement cannot
operate on variables of type ‘?’
because ‘?’ does not contain a public
definition for ‘GetEnumerator’
46>C:\Repositories\UnrealEngine\Engine\Source\Programs\AutomationTool\Android\AndroidPlatform.Automation.cs(991,13,991,20):
error CS0436: The type ‘Project’ in
‘C:\Repositories\UnrealEngine\Engine\Source\Programs\AutomationTool\Android\ArchiveCommand.Automation.cs’
conflicts with the imported type
‘Project’ in
‘AutomationScripts.Automation,
Version=4.0.0.0, Culture=neutral,
PublicKeyToken=null’. Using the type
defined in
‘C:\Repositories\UnrealEngine\Engine\Source\Programs\AutomationTool\Android\ArchiveCommand.Automation.cs’.
46>C:\Repositories\UnrealEngine\Engine\Source\Programs\AutomationTool\Android\AndroidPlatform.Automation.cs(991,21,991,42):
error CS0117: ‘Project’ does not
contain a definition for
‘WriteStageCommandline’ 47>
HTML5.Automation →
C:\Repositories\UnrealEngine\Engine\Binaries\DotNET\AutomationScripts\HTML5\HTML5.Automation.dll
48>------ Rebuild All started:
Project: AutomationTool,
Configuration: Development Any CPU
------ 48>CSC : error CS0006: Metadata file
‘C:\Repositories\UnrealEngine\Engine\Binaries\DotNET\AutomationScripts\Android\Android.Automation.dll’
could not be found