Supabase policy problem

[Kradhityaw]

var client = await SupabaseHelper.GetClientAsync();
var organization = new Organization
{
InvitationCode = textBoxInvCode.Text,
Name = textBoxOrgName.Text,
Website = textBoxOrgWeb.Text
};

if (client.Auth.CurrentUser == null)
{
MessageHelper.ShowError("Not authenticated");
return;
}

await client.From().Insert(organization);

var newMemberOrg = new OrganizationMember
{
OrganizationId = organization.Id,
UserId = client.Auth.CurrentUser.Id,
Role = "manager"
};

await client.From().Insert(newMemberOrg);

cannot add data in winform .net 8.0, what caused that?