请教高手，在用 comsol 计算的时候，出现这个提示，怎么解决

请教高手，在用 comsol 计算的时候，出现这个提示，怎么解决

Division by zero.
- Function: /
Failed to evaluate expression.
- Expression: d(d((-(comp1.pt+comp1.D*comp1.hpp*(log(0.13316353095140931)+log(abs((1-comp1.cS)*comp1.cL/((1-comp1.cL)*comp1.cS))))*comp1.px^2+comp1.D*comp1.hpp*(log(0.13316353095140931)+log(abs((1-comp1.cS)*comp1.cL/((1-comp1.cL)*comp1.cS))))*comp1.py^2-M*comp1.Eps*comp1.epsd*(sin(2*comp1.theta/unit_rad_cf)*(comp1.pyy-comp1.pxx)+2*comp1.pxy*cos(2*comp1.theta/unit_rad_cf))+M*(comp1.epsd^2+comp1.Eps*comp1.epsdd)*comp1.pxy*sin(2*comp1.theta/unit_rad_cf)-0.5*(comp1.epsd^2+comp1.Eps*comp1.epsdd)*(comp1.pyy-comp1.pxx)*M*cos(2*comp1.theta/unit_rad_cf)+M*(-28141.63269176069*comp1.hpp*log(abs(1.04882172672514*(1-comp1.cL)/comp1.cS))+2*W*comp1.p*(1-comp1.p)*(1-2*comp1.p))/unit_m_cf^2)*test(comp1.p)-M*(comp1.Eps^2+0.5*(comp1.epsd^2+comp1.Eps*comp1.epsdd))*comp1.px*test(comp1.px)-M*(comp1.Eps^2+0.5*(comp1.epsd^2+comp1.Eps*comp1.epsdd))*comp1.py*test(comp1.py))*(dvol),{test@4}),{abs@8})