Ошибка размеров столбцов таблицы в DataGridView

KassaDGV.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.Fill;

System.NullReferenceException
HResult=0x80004003 Сообщение = Ссылка на объект не указывает на экземпляр объекта. Источник = System.Windows.Forms Трассировка стека: в System.Windows.Forms.DataGridViewBand.set_Thickness(Int32 value) в System.Windows.Forms.DataGridViewColumn.set_Width(Int32 value) в ABS58.ABSFORM.tablekassaload() в C:\Users\User\source\repos\ABSKassa\ABSKassa\Form1.cs:строка 54

query = "SELECT * FROM dbo.Kassa";
dbAdp = new SqlDataAdapter(query, sqlConn);
SqlCommandBuilder cBuilder = new SqlCommandBuilder(dbAdp);
dbTable = new DataTable();
dbAdp.Fill(dbTable);
BindingSource bs = new BindingSource();
bs.DataSource = dbTable;
KassaDGV.DataSource = bs;
KassaDGV.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.Fill;
KassaDGV.ColumnHeadersDefaultCellStyle.Alignment = DataGridViewContentAlignment.MiddleCenter;
KassaDGV.Columns[0].ReadOnly = true;
KassaDGV.Columns[1].DefaultCellStyle.Alignment = DataGridViewContentAlignment.MiddleCenter;
KassaDGV.Columns[2].DefaultCellStyle.Alignment = DataGridViewContentAlignment.MiddleLeft;
KassaDGV.Columns[3].DefaultCellStyle.Alignment = DataGridViewContentAlignment.MiddleCenter;
KassaDGV.Columns[4].DefaultCellStyle.Alignment = DataGridViewContentAlignment.MiddleCenter;
KassaDGV.Columns[5].DefaultCellStyle.Alignment = DataGridViewContentAlignment.MiddleCenter;
KassaDGV.Columns[0].Width = 40;
KassaDGV.Columns[1].Width = 40;
KassaDGV.Columns[2].Width = 150;
KassaDGV.Columns[3].Width = 17;
KassaDGV.Columns[4].Width = 300;
KassaDGV.Columns[5].Width = 50;
KassaDGV.Columns[6].Width = 70;
KassaDGV.Columns[7].Width = 120;
KassaDGV.Columns[8].Width = 70;
KassaDGV.Columns[9].Width = 150;
KassaDGV.Columns[0].HeaderText = "№ п/п";
KassaDGV.Columns[1].HeaderText = "Дата";
KassaDGV.Columns[2].HeaderText = "Клиент";