type "EncryptedCredentials" is defined in an assembly that is not referenced

[dkjzGHKJHGRSD]

Hello.

I am writing a telegram bot

There is a need for data decryption. I use the libraries "Telegram.Bot.Extensions.Passport" and "Telegram.Bot". I program myself in another language, in which there is no way to do this, but there is the opportunity to use the assembly as a COM-object. I made the COM-object myself, but to build the solution you need to sign it and that all internal assemblies are also signed. I also did this.
But after signing the internal assembly "Telegram.Bot" on the "DecryptCredentials" method, an error appears: type "EncryptedCredentials" is defined in an assembly that is not referenced.

Do not judge strictly since I do not program in C #, but only study
I would be very grateful for any tips.

[dkjzGHKJHGRSD]

Проблема решена.

Как оказалось необходимо было установить сборки в GAC .
После этого все заработало.