error "ndefined value found.
- Detail: Undefined value found in the equation residual vector.
There are 18172 degrees of freedom giving NaN/Inf in the vector for the variable mod1.phi0.
at coordinates: (-1e-007,1.77472e-008), (-1e-007,1.77472e-008), (-1e-007,2.01046e-008), (-1e-007,2.01046e-008), (-9.81237e-008,1.88647e-008),"
Any one who can suggest any solution?