Range Rover evoque 63 plate not starting all the time

[3blondeboys]

Hi everyone it’s me again again with a problem with my 63 plate Range Rover evoque my car starts sometimes and other times it won’t it just clicks all lights on dash and monitor come on and doors lock fine two can anyone relate to this and what was the problem?
I just recently had the egr valve Changed in Jan of this year now seems to have this problem can shine some light ?please help