Robert's related to the solver, no problem! (4,4,5)
I believe the answer is:
bobs your uncle
'no problem' is the definition.
(I've seen this before)
'robert's related to the solver' is the wordplay.
I cannot really understand how this works, but
'robert's' could be 'bobs' and 'bobs' is located in the answer.
'solver' could be 'you' (the person solving the crossword) and 'you' is found within the answer.
This may be the basis of clue (or it may be nonsense).
(Other definitions for bobs your uncle that I've seen before include "Easily finished (relatively speaking?)" , "Everything will be OK" , "Everything's OK" , "Simple!" , "Hope perhaps exists in the family" .)