rooted mobile wont boot up

[Android Central Question]

so i rooted my Samsung core prime with odin and everything was fine i turn on and off my mobile many times. then i turned off OEM in developer options and turned off my mobile and now it wont start up. it has a big yellow triangle on the screen and it says "custom binary blocked by FRP". i tried factory reset and clearing cache it still wont start. someone PLEASE help.