I have had this error recently on three different project packages. This is on Windows 10 and newly reinstalled Trados 2021. I have gone through the recommended steps for this error (changing the file/folder names, and also repairing/reinstalling).

Any help is much appreciated. Here are the error details:

<SDLErrorDetails time="2/10/2022 12:28:54 PM">
<ErrorMessage>Object reference not set to an instance of an object.</ErrorMessage>
<Exception>
<Type>System.NullReferenceException, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</Type>
<HelpLink />
<Source>Sdl.ProjectApi.Implementation</Source>
<HResult>-2147467261</HResult>
<StackTrace><![CDATA[ at Sdl.ProjectApi.Implementation.ScheduledTask.AddReport(ITaskTemplate taskTemplate, String name, String description, String data, ILanguageDirection languageDirection, Boolean isCustomReport)
at Sdl.ProjectApi.Implementation.ProjectPackageImport.AddAutomaticTaskReports(IPackageProject packageProject, Project project)
at Sdl.ProjectApi.Implementation.ProjectPackageImport.ImportPackageProject(IPackageProject packageProject, Boolean& isNewProject)
at Sdl.ProjectApi.Implementation.ProjectPackageImport.StartImpl()
at Sdl.ProjectApi.Implementation.PackageOperation.Start()]]></StackTrace>
</Exception>
<Environment>
<ProductName>Trados Studio</ProductName>
<ProductVersion>Studio16</ProductVersion>
<EntryAssemblyFileVersion>16.2.9.9198</EntryAssemblyFileVersion>
<OperatingSystem>Microsoft Windows 10 Home</OperatingSystem>
<ServicePack>NULL</ServicePack>
<OperatingSystemLanguage>1033</OperatingSystemLanguage>
<CodePage>1252</CodePage>
<LoggedOnUser>DESKTOP-0P1AA53\steak</LoggedOnUser>
<DotNetFrameWork>4.0.30319.42000</DotNetFrameWork>
<ComputerName>DESKTOP-0P1AA53</ComputerName>
<ConnectedToNetwork>True</ConnectedToNetwork>
<PhysicalMemory>8303672 MB</PhysicalMemory>
</Environment>
</SDLErrorDetails>