No se puede cargar el archivo o ensamblado "Newtonsoft.Json, Version=12.0.0.0, Culture=neutral. PublicKey Token=30ad4fe6b2a6aeed"

Dear all,

I am working with Studio 2019 and when I try to add my Deepl APIkey it appears the following message:

Does anyone know how can I solve this error?

Thank you very much in advance

Best