Error in reactingFoam
 

I am getting this error while running reactingFoam
"Sum of mass fractions is zero for species 4(O2 H2O H2 N2)
Min of mass fraction sum 0
From void Foam::multiComponentMixture<ThermoType>::correctMa ssFractions() [with ThermoType = Foam::sutherlandTransport<Foam::species::thermo<Fo am::janafThermo<Foam:: perfectGas<Foam::specie> >, Foam::sensibleEnthalpy> >]
in file lnInclude/multiComponentMixture.C at line 65."