Problem with: "String was not recognized as a valid DateTime."

Greetings to everyone, I'm doing a support control system in VB.Net Community 2017 my database is SQLite , the connection is fine and makes the perfect query and as I wish but when changing database I gives the following error:

  

System.FormatException: 'String was not recognized as a valid   DateTime. '

In the other database, I only had a table with first and last names and when I wanted to use this new database with two new fields " fecha and ceduladiario ", I presented the previous error.

I will post the code so that they understand me better, greetings and thanks for the help.

Imports System.Data.SQLite

Public Class Form1
    Dim cadena As String = "Data Source=ControlDatos.db;Version=3;"
    Dim conn As New SQLiteConnection
    Dim dv As DataView
    Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
        conn = New SQLiteConnection(cadena)

    conn.Open()

    Dim DA As New SQLiteDataAdapter("SELECT * FROM AsistenciaDiaria", conn)
    Dim DT As New DataTable
    DA.Fill(DT)
    dv = DT.DefaultView
    DataGridView1.DataSource = dv
End Sub

Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
    conn = New SQLiteConnection(cadena)
    Try
        conn.Open()
        MsgBox("conexion exitosa", MsgBoxStyle.Information, "CONECTADO")
    Catch ex As Exception
        MsgBox("no se pudo conectar por", ex.ToString)
    End Try
End Sub

Private Sub TextBox1_TextChanged(sender As Object, e As EventArgs) Handles TextBox1.TextChanged
    dv.RowFilter = "CEDULADIARIO like '%" & TextBox1.Text & "%'"
End Sub

End Class

NOTE: I do not use modules or classes, I'm doing everything from a form since it's a small system type agenda or something similar. Again, thanks for the help.