Linux GPG Encryption error

Hello folks,
In the Linux level 2:Linux GPG Encryption,i had some error (see screenshot) when i tried to encrypt the “encrypt_me.txt” file into “encrypt_me.asc” by running this command:


i get this “Network error” for the user ID.
However,ive had no issue when it comes to “decrypting” files tho.
Any help in here would be nice,thanx!