Solving Error loading key error in libcrypto in Linux
This Tip Try to Solve SSH-Add Error loading key error in libcrypto in GNU/Linux – Step by step Tutorial.
Very often this issue is done because you’re trying mistaikenly to Add the Public Key instead of the Private!

Fixing Issue
Then to Solve Error loading key error in libcrypto in Linux
Triple Check you Command Ssh-add.
Key Name has Not to end with “.pub”