Image publishing fails with the below error: 
An unexpected system error occurred. Retry the operation or contact technical support. Exception Message: Compositing engine call time out. Exception Details: <No Details>


App Layering logs says: 
2021-02-09 11:22:29,359 ERROR [150957]        AsyncWorkItemManag: WorkItem with id 9240576 finished with an exception: System.TimeoutException: Compositing engine call timed out. ---> System.Threading.Tasks.TaskCanceledException: A task was canceled.
  at System.Net.Http.MonoWebRequestHandler.SendAsync (System.Net.Http.HttpRequestMessage request, System.Threading.CancellationToken cancellationToken) [0x004ac] in /builddir/build/BUILD/mono-6.10.0.104/mcs/class/System.Net.Http/MonoWebRequestHandler.cs:507
  at System.Net.Http.HttpClient.FinishSendAsyncUnbuffered (System.Threading.Tasks.Task`1[TResult] sendTask, System.Net.Http.HttpRequestMessage request, System.Threading.CancellationTokenSource cts, System.Boolean disposeCts) [0x000b3] in /builddir/build/BUILD/mono-6.10.0.104/external/corefx/src/System.Net.Http/src/System/Net/Http/HttpClient.cs:531
  at Uni.Core.Adapters.ioc.Castle.Facilities.RestClient.RestProxyInterceptor.FollowLocation (System.Net.Http.HttpRequestMessage request, System.Threading.CancellationToken ct) [0x0004d] in E:\jenkins\ws-Applayering.Services-20.9.topsfield\Uni.Core\Adapters\ioc\Castle\Facilities\RestClient\RestProxyInterceptor.cs:51
  at Uni.Core.Adapters.ioc.Castle.Facilities.RestClient.RestProxyInterceptor.Handle (Castle.DynamicProxy.IInvocation invocation, Uni.Core.Adapters.ioc.Castle.Facilities.RestClient.IRestMethodTranslator handler) [0x00071] in E:\jenkins\ws-Applayering.Services-20.9.topsfield\Uni.Core\Adapters\ioc\Castle\Facilities\RestClient
 

Problem Cause