Hi, I am new to centos and I'm trying to extract a " pjproject-2.9.tar.bz2" archive but keep getting an error.

this is the error i keep getting:

[root@asterisk downloads]# tar -xjvf pjproject-2.9.tar.bz2
tar (child): bzip2: Cannot exec: No such file or directory
tar (child): Error is not recoverable: exiting now
tar: Child returned status 2
tar: Error is not recoverable: exiting now