Hello Pankaj,
Please upload the error screenshot and paste it into your reply for better assistance to your issue. Meanwhile, navigate to C:\ProgramData\Microsoft\User Account Pictures. Now here you'll see user and guest pictures. Replace them with the image you want to fix as user account picture. Make sure you use the same format and size of those pictures. Reboot and your desired image will be set as user account picture.
P.S. : ProgramData folder is hidden by default.
[UPDATE] There is alternative solution for this problem:
https://www.kapilarya.com/setting-the-account-picture-failed-please-try-again-windows-10
Hope this helps, Good luck :)