Security Update Problem (Moto G2 XT1068)

I am using Moto g2 XT1068.Recently i have received security update (22.56.3 en 3) by OTA. I have downloaded it but while installing showing error( Update not successful ). system Version : 22.21.28 en 03. I have tried wipe data cache partition also still not working .Kindly help me to resolve the problem.