Recently, We found below error during the development -
Message: Access to the registry key 'Global' is denied.
8516 10:01:25 INFO Cache created: 'DeviceDictionaryCache' (max size: 100MB, running total: 3908MB)
18808 10:01:40 INFO [Path Analyzer](.) Map EnsureAllDeployed started.
18808 10:01:40 INFO [Path Analyzer](.) Map EnsureAllDeployed complete.
18808 10:02:40 INFO [Path Analyzer](.) Map EnsureAllDeployed started.
18808 10:02:40 INFO [Path Analyzer](.) Map EnsureAllDeployed complete.
14936 10:02:47 ERROR Commerce.Connector - Request URL: GetCatalogMappings(environmentName='') - Exception: System.AggregateException: One or more errors occurred. ---> System.Threading.Tasks.TaskCanceledException: A task was canceled.
--- End of inner exception stack trace ---
at System.Threading.Tasks.Task`1.GetResultCore(Boolean waitCompletionNotification)
at Sitecore.Commerce.Engine.Connect.DataProvider.CommerceRepository.InvokeHttpClientGet(String serviceCallUrl, Boolean useCommerceOps, Boolean raiseException, String language, String environment, IDictionary`2 headers)
---> (Inner Exception #0) System.Threading.Tasks.TaskCanceledException: A task was canceled.<---
Exception: System.AggregateException
Message: One or more errors occurred.
Source: mscorlib
at System.Threading.Tasks.Task`1.GetResultCore(Boolean waitCompletionNotification)
at Sitecore.Commerce.Engine.Connect.DataProvider.CommerceRepository.InvokeHttpClientGet(String serviceCallUrl, Boolean useCommerceOps, Boolean raiseException, String language, String environment, IDictionary`2 headers)
Nested Exception
Exception: System.Threading.Tasks.TaskCanceledException
Message: A task was canceled.
Investigation details - We noticed it was because of deployment, As few dlls were missing, After a full deployment this issue has been resolved.