The program reads the case but stops while doind the simulation

src/modules/solver/moduleSolver.f90

@@ -129,6 +129,7 @@ MODULE moduleSolver
 
     SUBROUTINE initEM(self, EMType)
       USE moduleEM
+      USE moduleErrors, only: criticalError
       IMPLICIT NONE
 
       CLASS(solverGeneric), INTENT(inout):: self
@@ -141,6 +142,9 @@ MODULE moduleSolver
       CASE('ElectrostaticBoltzmann')
         self%solveEM => solveElecFieldBoltzmann
 
+      CASE DEFAULT
+        CALL criticalError('EM Solver ' // EMType // ' not found', 'readSolver')
+
       END SELECT
 
     END SUBROUTINE initEM