Failed to load required language resources (one or more errors occurred)

This error message appears when I try to open a file in Studio 2021 (it seems to affect all cloud projects/files, I am working with cloud projects on Trados Live). I am able to open the document, but many features are not working. I have no plugins installed on my machine. I'm currently using project packages as a workaround with limited success, could it be a problem at SDL's end? Or is there some other way to resolve the issue?

Error message below:


<SDLErrorDetails time="09/07/2021 10:17:48">
  <ErrorMessage>Se han producido uno o varios errores.</ErrorMessage>
  <Exception>
    <Type>System.AggregateException, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</Type>
    <HelpLink />
    <Source>mscorlib</Source>
    <HResult>-2146233088</HResult>
    <StackTrace><![CDATA[   en System.Threading.Tasks.Task.ThrowIfExceptional(Boolean includeTaskCanceledExceptions)
   en System.Threading.Tasks.Task`1.GetResultCore(Boolean waitCompletionNotification)
   en System.Threading.Tasks.Task`1.get_Result()
   en Sdl.BestMatchService.TranslationProvider.LanguageProcessingRulesProvider.GetLanguageProcessingRulesModel()
   en Sdl.BestMatchService.TranslationProvider.LanguageProcessingRulesProvider.GetLanguageProcessingRules()
   en Sdl.BestMatchService.TranslationProvider.LanguageProcessingRulesProvider.get_LanguageResourceBundles()
   en Sdl.BestMatchService.TranslationProvider.LanguageCloudTranslationProvider.get_LanguageResourceBundles()
   en Sdl.LanguagePlatform.TranslationMemoryApi.ResourcePicker.PickBundles(Object provider)
   en Sdl.ProjectApi.Helpers.LanguageObjectsCache.GetLanguageResources(ILanguageDirection languageDirection)
   en Sdl.ProjectApi.Helpers.LanguageObjectsCache.<>c__DisplayClass4_0.<GetLanguageResources>b__0(String _)
   en System.Collections.Concurrent.ConcurrentDictionary`2.GetOrAdd(TKey key, Func`2 valueFactory)
   en Sdl.ProjectApi.Helpers.LanguageObjectsCache.GetLanguageResources(IProject project, Language language)
   en Sdl.TranslationStudio.Editor.TranslationEditor.Intellisense.TokenizationContextBuilder.Build(CultureInfo culture)
   en Sdl.TranslationStudio.Editor.TranslationEditor.Intellisense.TagFormattingDataProvider.ProcessDocumentTokens(SideBySideEditor editor, IList`1 suggestionData)
   en Sdl.TranslationStudio.Editor.TranslationEditor.Intellisense.TagFormattingDataProvider.GetSuggestionData(EditingContext context)
   en Sdl.TranslationStudio.Editor.TranslationEditor.Actions.LaunchTagFormattingWindowAction.GetSuggestionData(SideBySideEditor editor)
   en Sdl.TranslationStudio.Editor.TranslationEditor.Actions.LaunchTagFormattingWindowAction.IsActionEnabled()
   en Sdl.TranslationStudio.Api.Implementation.Editor.AbstractActiveDocumentAction.UpdateAction()
   en Sdl.TranslationStudio.Api.Implementation.Editor.AbstractActiveDocumentEditingViewAction.OnActiveDocumentChanged()
   en Sdl.TranslationStudio.Editor.TranslationEditor.Actions.LaunchTagFormattingWindowAction.OnActiveDocumentChanged()
   en Sdl.TranslationStudio.Api.Implementation.Editor.AbstractActiveDocumentAction.EditorService_ActiveDocumentChanged(IDocument document)
   en Sdl.TranslationStudio.Api.Editor.DocumentEventHandler.Invoke(IDocument document)
   en Sdl.TranslationStudio.Editor.EditorService.set_ActiveDocument(IDocument value)
   en Sdl.TranslationStudio.Editor.EditorView.OnActiveViewPartChanged(IViewPartReference viewPartReference)
   en Sdl.Desktop.Platform.AbstractViewWithParts.Control_ActiveViewPartChanged(IViewWithParts view, IViewPartReference viewPartReference)
   en Sdl.Desktop.Platform.WinForms.DockingViewContentControl.OnActiveViewPartChanged(IViewPartReference viewPartReference)
   en Sdl.Desktop.Platform.WinForms.DockingViewContentControl.InternalActivateViewPart(IViewPartReference viewPartToActivate)
   en Sdl.Desktop.Platform.WinForms.DockingViewContentControl._tabControl_SelectedTabChanged(Object sender, SelectedTabChangedEventArgs e)
   en Infragistics.Win.UltraWinTabControl.UltraTabControlBase.OnSelectedTabChanged(SelectedTabChangedEventArgs e)
   en Infragistics.Win.UltraWinTabControl.UltraTabControlBase.RaiseEvent(UltraTabControlEventId id, EventArgs e)
   en Infragistics.Win.UltraWinTabControl.UltraTabControlBase.OnManagerSelectedTabItemChanged(Object sender, SelectedTabItemChangedEventArgs e)
   en Infragistics.Win.UltraWinTabs.TabManager.set_SelectedTabItem(ITabItem value)
   en Infragistics.Win.UltraWinTabControl.UltraTabControlBase.SetSelectedTab(UltraTab tab)
   en Infragistics.Win.UltraWinTabControl.UltraTabControlBase.set_SelectedTab(UltraTab value)
   en Sdl.Desktop.Platform.WinForms.DockingViewContentControl.AddViewPartTab(IViewPartReference viewPartReference)
   en Sdl.Desktop.Platform.WinForms.DockingViewContentControl.AddViewPart(IViewPartReference viewPartReference)
   en Sdl.Desktop.Platform.WinForms.DockingViewContentControl.NotifyViewPartAdded(IViewPartReference viewPartReference)
   en Sdl.Desktop.Platform.AbstractViewWithParts.AddViewPart(IViewPartReference viewPartReference)
   en Sdl.Desktop.Platform.AbstractDockingView.AddViewPart(IViewPartReference viewPartReference)
   en Sdl.TranslationStudio.Editor.EditorView.AddDocumentViewPart(IViewPartReference documentViewPartReference)
   en Sdl.TranslationStudio.Editor.Shared.InternalEditorContext.AddDocumentViewPart(IDocumentViewPart documentViewPart)
   en Sdl.TranslationStudio.Api.Editor.AbstractInternalDocument.AfterLoad(IJob job)]]></StackTrace>
    <InnerException>
      <Type>Sdl.ApiClientSdk.Core.Exceptions.ApiErrorException, Sdl.ApiClientSdk.Core, Version=1.1.15.0, Culture=neutral, PublicKeyToken=c28cdb26c445c888</Type>
      <TraceId>34da81d5-8d4c-4ae3-8c29-8e81fa5781de</TraceId>
      <RequestMessage />
      <ResponseMessage>StatusCode: 500, ReasonPhrase: '', Version: 1.1, Content: System.Net.Http.StreamContent, Headers:
{
  Transfer-Encoding: chunked
  Connection: keep-alive
  Vary: Origin
  Vary: Access-Control-Request-Method
  Vary: Access-Control-Request-Headers
  x-application-context: 
  Date: Fri, 09 Jul 2021 09:15:18 GMT
  Content-Type: application/json
}{"errorCode":"INTERNAL_ERROR","source":"Sdl.StudioBackendForFrontend.RestService","stacktrace":"   at Sdl.StudioBackendForFrontend.RestService.Converters.LanguageResourcesDomainConverter.GetLanguageProcessingRulesFrom(LanguageResourceTemplate template) in D:\\a\\1\\s\\Sdl.StudioBackendForFrontend.RestService\\Converters\\LanguageResourcesDomainConverter.cs:line 29\n   at Sdl.StudioBackendForFrontend.RestService.Controllers.LanguageResourcesController.GetLanguageResourceTemplateAsync(String templateId) in D:\\a\\1\\s\\Sdl.StudioBackendForFrontend.RestService\\Controllers\\LanguageResourcesController.cs:line 28\n   at Microsoft.AspNetCore.Mvc.Infrastructure.ActionMethodExecutor.TaskOfIActionResultExecutor.Execute(IActionResultTypeMapper mapper, ObjectMethodExecutor executor, Object controller, Object[] arguments)\n   at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.&lt;InvokeActionMethodAsync&gt;g__Logged|12_1(ControllerActionInvoker invoker)\n   at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.&lt;InvokeNextActionFilterAsync&gt;g__Awaited|10_0(ControllerActionInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)\n   at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Rethrow(ActionExecutedContextSealed context)\n   at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Next(State&amp; next, Scope&amp; scope, Object&amp; state, Boolean&amp; isCompleted)\n   at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.&lt;InvokeInnerFilterAsync&gt;g__Awaited|13_0(ControllerActionInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)\n   at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.&lt;InvokeFilterPipelineAsync&gt;g__Awaited|19_0(ResourceInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)\n   at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.&lt;InvokeAsync&gt;g__Logged|17_1(ResourceInvoker invoker)\n   at Microsoft.AspNetCore.Routing.EndpointMiddleware.&lt;Invoke&gt;g__AwaitRequestTask|6_0(Endpoint endpoint, Task requestTask, ILogger logger)\n   at Microsoft.AspNetCore.Authorization.AuthorizationMiddleware.Invoke(HttpContext context)\n   at Microsoft.AspNetCore.Diagnostics.ExceptionHandlerMiddleware.&lt;Invoke&gt;g__Awaited|6_0(ExceptionHandlerMiddleware middleware, HttpContext context, Task task)","message":"Object reference not set to an instance of an object."}</ResponseMessage>
      <HelpLink />
      <Source>Sdl.ApiClientSdk.Core</Source>
      <HResult>-2146233088</HResult>
      <StackTrace><![CDATA[   en Sdl.ApiClientSdk.Core.RestClient.<SendRequestAsync>d__25.MoveNext()
--- Fin del seguimiento de la pila de la ubicación anterior donde se produjo la excepción ---
   en System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   en System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   en Sdl.ApiClientSdk.StudioBFF.StudioBFFService.<GetLanguageProcessingRulesAsync>d__32.MoveNext()]]></StackTrace>
    </InnerException>
  </Exception>
  <Environment>
    <ProductName>SDL Trados Studio</ProductName>
    <ProductVersion>Studio16</ProductVersion>
    <EntryAssemblyFileVersion>16.1.8.4404</EntryAssemblyFileVersion>
    <OperatingSystem>Microsoft Windows 10 Home</OperatingSystem>
    <ServicePack>NULL</ServicePack>
    <OperatingSystemLanguage>3082</OperatingSystemLanguage>
    <CodePage>1252</CodePage>
    <LoggedOnUser>TRADUCCION03\traduccion03</LoggedOnUser>
    <DotNetFrameWork>4.0.30319.42000</DotNetFrameWork>
    <ComputerName>TRADUCCION03</ComputerName>
    <ConnectedToNetwork>True</ConnectedToNetwork>
    <PhysicalMemory>16448632 MB</PhysicalMemory>
  </Environment>
</SDLErrorDetails>