ERROR > An item with the same key has already been added

Hi,

I'm using SDL Trados 2019.

I get this error message very often in the last 2 weeks.

Sometimes, trying to process excel files, but also .idml files.

I also created a new file (excel or .idml) copying and pasting the content from the source file in a new file with no positive results.

The TM was updated.

Here below the error message.

Any idea?

<SDLErrorDetails time="31/03/2021 12:42:37">
  <ErrorMessage>An item with the same key has already been added.</ErrorMessage>
  <Exception>
    <Type>Sdl.ProjectApi.ProjectApiException, Sdl.ProjectApi, Version=15.1.0.0, Culture=neutral, PublicKeyToken=c28cdb26c445c888</Type>
    <HelpLink />
    <Source />
    <HResult>-2146233088</HResult>
    <StackTrace><![CDATA[]]></StackTrace>
  </Exception>
  <Environment>
    <ProductName>SDL Trados Studio</ProductName>
    <ProductVersion>15.0.0.0</ProductVersion>
    <EntryAssemblyFileVersion>15.2.8.3007</EntryAssemblyFileVersion>
    <OperatingSystem>Microsoft Windows 10 Pro</OperatingSystem>
    <ServicePack>NULL</ServicePack>
    <OperatingSystemLanguage>1040</OperatingSystemLanguage>
    <CodePage>1252</CodePage>
    <LoggedOnUser>VESPA\Vespa</LoggedOnUser>
    <DotNetFrameWork>4.0.30319.42000</DotNetFrameWork>
    <ComputerName>VESPA</ComputerName>
    <ConnectedToNetwork>True</ConnectedToNetwork>
    <PhysicalMemory>8260788 MB</PhysicalMemory>
  </Environment>
</SDLErrorDetails>