cannot convert from viewmodel to model when saving changes

Good morning,
im getting the error show in the picture bellow, I've seen other examples and it should work, am I doing something wrong?


my model

 public class Usuario
    {
        public int Id { get; set; }
        
        [Required]
        [StringLength(80)]
        public string Nombres { get; set; }

        [Required]
        [StringLength(40)]
        [Display(Name ="Primer apellido")]
        public string PrimerApellido { get; set; }

        [Required]
        [StringLength(40)]
        [Display(Name = "Segundo apellido")]
        public string SegundoApellido { get; set; }

        [Required]
        [StringLength(30)]
        public string Cedula { get; set; }

        [Required]
        [Display(Name = "Fecha nacimiento ")]
        public DateTime FechaNacimiento { get; set; }

        [Required]
        [StringLength(5)]
        public string Rh { get; set; }

        [Required]
        [StringLength(10)]
        public string Genero { get; set; } 

        [Required]
        [StringLength(200)]
        [Display(Name = "Dirección")]
        public string Direccion { get; set; }

        [Required]
        [StringLength(200)]
        [Display(Name = "Barrio")]
        public string Barrio { get; set; }

                
        public Municipio Municipio { get; set; }

        [Display(Name = "Municipio")]
        public int MunicipioId { get; set; }
        

        [Display(Name ="Telefono fijo")]
        public string TelefonoFijo { get; set; }

        [Required]
        [StringLength(30)]
        public string Celular { get; set; }

        [Required]
        [StringLength(254)]
        public string Correo { get; set; }

        public string Foto { get; set; }

        public string ImagenCC { get; set; }

        public string NumeroIdServicio { get; set; }

        [Required]
        public bool ResidenteAMB { get; set; }

        [DatabaseGenerated(DatabaseGeneratedOption.Computed)]
        [DefaultValue("getutcdate()")]
        public DateTime? FechaInicioRegistro { get; set; }

        [DefaultValue(false)]
        public Boolean? Validado { get; set; }
                
        public DateTime? FechaFinalizaRegistro { get; set; }

        public int? Pin { get; set; }

    }

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my view model

 public class NuevoUsuarioViewModel
    {

        //public Usuario Usuario { get; set; }
        [Required]
        [StringLength(80)]
        public string Nombres { get; set; }

        [Required]
        [StringLength(40)]
        [Display(Name = "Primer apellido")]
        public string PrimerApellido { get; set; }

        [Required]
        [StringLength(40)]
        [Display(Name = "Segundo apellido")]
        public string SegundoApellido { get; set; }

        [Required]
        [StringLength(30)]
        public string Cedula { get; set; }

        [Required]
        [Display(Name = "Fecha nacimiento ")]
        public DateTime FechaNacimiento { get; set; }

        [Required]
        [StringLength(5)]
        public string Rh { get; set; }

        [Required]
        [StringLength(10)]
        public string Genero { get; set; }

        [Required]
        [StringLength(200)]
        [Display(Name = "Dirección")]
        public string Direccion { get; set; }

        [Required]
        [StringLength(200)]
        [Display(Name = "Barrio")]
        public string Barrio { get; set; }


        [Display(Name = "Municipio")]
        public int MunicipioId { get; set; }


        [Display(Name = "Telefono fijo")]
        public string TelefonoFijo { get; set; }

        [Required]
        [StringLength(30)]
        public string Celular { get; set; }

        [Required]
        [StringLength(254)]
        public string Correo { get; set; }      

        [Required]
        public bool ResidenteAMB { get; set; }    

        [Display(Name = "Municipio")]
        public IEnumerable<BiciPublica.Models.Municipio> Municipios { get; set; }
        
    }

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thanks in advance for your help.