Install libopenobex2 by entering the following commands in the terminal:
sudo apt update sudo apt install libopenobex2
OBEX protocol library
The Object Exchange protocol can best be described as binary HTTP. OBEX is optimised for ad-hoc wireless links and can be used to exchange all kind of objects like files, pictures, calendar entries (vCal) and business cards (vCard). . OBEX is builtin in devices like PDA's like the Palm Pilot, and mobile phones like the Ericsson R320, Siemens S25, Siemens S45, Siemens ME45, Nokia NM207 and Nokia 9110 Communicator.