Cannot open SDL Trados 2019 with the message "Specified cast is not valid."

 I cannot open SDL Trados 2019. 

<SDLErrorDetails time="7/29/2020 12:31:17 PM">
  <ErrorMessage>Specified cast is not valid.</ErrorMessage>
  <Exception>
    <Type>System.InvalidCastException, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</Type>
    <HelpLink />
    <Source>System.Data.SQLite</Source>
    <HResult>-2147467262</HResult>
    <StackTrace><![CDATA[   at System.Data.SQLite.SQLiteDataReader.VerifyType(Int32 i, DbType typ)
   at System.Data.SQLite.SQLiteDataReader.GetGuid(Int32 i)
   at Sdl.LanguagePlatform.TranslationMemoryImpl.Storage.DbStorage.ReadTuWithFlags(DbDataReader reader)
   at Sdl.LanguagePlatform.TranslationMemoryImpl.Storage.DbStorage.GetTuRange(DbCommand getTusCmd)
   at Sdl.LanguagePlatform.TranslationMemoryImpl.Storage.SqliteStorage.GetTusForReindex(Int32 tmId, Int32 startAfter, Int32 count, Int64 currentSigHash)
   at Sdl.LanguagePlatform.TranslationMemoryImpl.ResourceManager.HasLegacyFileBasedHashChanges(AnnotatedTranslationMemory tm, Int64 currentHash)
   at Sdl.LanguagePlatform.TranslationMemoryImpl.ResourceManager.GetReindexRequired(PersistentObjectToken tmId)
   at Sdl.LanguagePlatform.TranslationMemoryImpl.API.GetReindexRequired(Container container, PersistentObjectToken tmId)
   at Sdl.LanguagePlatform.TranslationMemoryApi.FileBasedTranslationMemory.get_ReindexRequired()
   at Sdl.LanguagePlatform.TranslationMemoryApi.TranslationMemoryUpgradeUtil.TranslationMemoryRequiresReindex(ITranslationProvider translationMemory)
   at Sdl.TranslationStudio.TranslationMemoryManager.ExplorerBarControl.AddTranslationMemory(ITranslationMemoryManagementObject tm, Boolean select)
   at Sdl.TranslationStudio.TranslationMemoryManager.ExplorerBarControl.RefreshTree()
   at Sdl.TranslationStudio.TranslationMemoryManager.TranslationMemoryManagerView.OnActivate()
   at Sdl.Desktop.Platform.Implementation.ViewSite.OnActivate()
   at Sdl.Desktop.Platform.Implementation.StudioWindow.Init(IEventAggregator eventAggregator)
   at Sdl.Desktop.Platform.Implementation.Studio.CreateWindowInternal(Boolean setActive, IEventAggregator eventAggregator)
   at Sdl.Desktop.Platform.Implementation.Studio.Run(ISplashScreen splashScreen, IEventAggregator eventAggregator)
   at Sdl.TranslationStudio.Application.Launcher.RunApplication()]]></StackTrace>
  </Exception>
  <Environment>
    <ProductName>SDL Trados Studio</ProductName>
    <ProductVersion>15.0.0.0</ProductVersion>
    <EntryAssemblyFileVersion>15.2.7.2849</EntryAssemblyFileVersion>
    <OperatingSystem>Microsoft Windows 10 Home</OperatingSystem>
    <ServicePack>NULL</ServicePack>
    <OperatingSystemLanguage>1042</OperatingSystemLanguage>
    <CodePage>949</CodePage>
    <LoggedOnUser>DAVID-PC\eomil</LoggedOnUser>
    <DotNetFrameWork>4.0.30319.42000</DotNetFrameWork>
    <ComputerName>DAVID-PC</ComputerName>
    <ConnectedToNetwork>True</ConnectedToNetwork>
    <PhysicalMemory>16648092 MB</PhysicalMemory>
  </Environment>
</SDLErrorDetails>

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