I get this error in an ABP project:

InvalidCastException: Unable to cast object of type 'System.Func'3[System.Nullable'1[System.DateTime],System.Nullable'1[System.DateTime],System.Boolean]' to type 'System.Func'3[System.DateTime,System.DateTime,System.Boolean]'.

I get this when i try to insert an Entity into the DB.

The Entity in question is this:

using Abp.Domain.Entities;
using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace OperaABP.ReportKPI
{
    [Table ("Semprini_Dati")]
    public class Semprini_Dati : Entity<DateTime>
    {
        [Key]
        [Required]
        [Column ("Data")]
        [DataType (DataType.Date)]
        public override DateTime Id { get; set; }

        [Required]
        [Column("Imballati (pz)")]
        public double Imballati_pz { get; set; }

        [Required]
        [Column("Lavorate (h)")]
        public double Lavorate_h { get; set; }

        [Required]
        [Column("Prima Linea (h)")]
        public double Prima_Linea_h { get; set; }

        [Required]
        [Column("Seconda Linea o altro (h)")]
        public double Seconda_Linea_o_altro_h { get; set; }

        [Required]
        [Column("Produttività lorda (pz/h)")]
        public double Produttivita_lorda_pz_h { get; set; }
    }
}

The builder in the context is this:

modelBuilder.Entity<Semprini_Dati>(entity =>
{
    entity.HasKey(e => new { e.Id}).HasName("PK_Semprini_Dati");
});

The code-block giving this error is this, and it is a method into the Repository:

public async Task<Semprini_Dati> AddAsync(Semprini_Dati dati)
{
    try
    {
        await _context.GetDbContext().AddAsync(dati);

        return dati;
    }
    catch (Exception)
    {
        throw;
    }
}

An example of an inserted entity, in json, is this:

{
  "data": "2024-05-23",
  "imballati_pz": 260,
  "lavorate_h" = 8,
  "prima_Linea_h": 8,
  "produttivita_lorda_pz_h" = 32.5,
  "seconda_Linea_o_altro_h" = 0
}

The error seems to be due to a casting from nullable data to Non-nullable data, but none of the inserted data turns out to be nullable, so I don’t understand where the problem comes from

I tried debugging to the highest level possible, without finding anything that apparently could clarify the problem.
I double-checked that the data type was consistent with the database.
The problem persists and seems to be due to this Casting from nullable data to NON-nullable data, without having inserted any nullable data.