INFO : 2021-04-16 18:28:13Z - Stopping app pool Otter...
INFO : 2021-04-16 18:28:13Z - App pool Otter state is now Stopped.
INFO : 2021-04-16 18:28:13Z - App pool is stopped.
INFO : 2021-04-16 18:28:13Z - Stopping service INEDOOTTERSVC...
INFO : 2021-04-16 18:28:13Z - Service is stopped.
INFO : 2021-04-16 18:28:13Z - Processed 1720 pages for database 'Otter', file 'Otter' on file 1.
INFO : 2021-04-16 18:28:13Z - Processed 2 pages for database 'Otter', file 'Otter_log' on file 1.
INFO : 2021-04-16 18:28:13Z - BACKUP DATABASE successfully processed 1722 pages in 0.098 seconds (137.236 MB/sec).
INFO : 2021-04-16 18:28:13Z - Backup complete.
INFO : 2021-04-16 18:28:13Z - Connecting to https://proget.inedo.com/upack/PrereleaseProducts to get metadata for InedoReleases/Otter.Web...
INFO : 2021-04-16 18:28:13Z - Downloading package...
ERROR: 2021-04-16 18:28:14Z - Unhandled exception: System.ArgumentNullException: Value cannot be null.
Parameter name: task
   at System.ThrowHelper.ThrowArgumentNullException(ExceptionArgument argument)
   at Inedo.BuildMaster.Windows.ServiceApplication.Agents.InedoAgentConnection.TryGetServiceInternalAsync(Type serviceType)
   at Inedo.BuildMaster.Extensibility.Agents.ConnectingAgent.<GetAgentServiceInternalAsync>d__8.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Inedo.Extensibility.Agents.Agent.<TryGetServiceAsync>d__6`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Inedo.Extensions.UniversalPackages.PackageRegistry.<GetMachineRegistryRootAsync>d__17.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Inedo.Extensions.UniversalPackages.PackageRegistry.<GetRegistryAsync>d__11.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Inedo.Extensions.Operations.ProGet.PackageDeployer.<DeployAsync>d__1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Inedo.BuildMaster.Windows.ServiceApplication.Executions.PlanExecuter.BuildMasterExecuter.<ExecuteActionAsync>d__49.MoveNext()