why can't i use estat phtest with tvc - what is the alternative?

[Rose Matthews]

stcox var1 var2 va3, tvc(i.gender) nohr
gen insample2 =e(sample)
drop if insample2 == 0 
estat phtest, detail 

stcox var1 var2 va3, schoenfeld(schoen*) scaledsch(scaled*) tvc(i.gender) nohr
stphtest, rank detail

For both methods it said 'post-estimation is not allowed after estimation with tvc(); scaledsch() may not be combined with option tvc()

What is the alternative to created scaledsch to assess GOF for PH ?