What does it mean when there is no SU Binary installed?

[AC Question]

Hi I just rooted my Samsung avant 4.4.2 device and after I downloaded Supersu it said that there is no SU Binary installed. The way I rooted my device is by using a usb cord and the program odin I don't know what went wrong.

 

[arya77670]

Install busybox, maybe fix this.