Level 75
Just include some validation prior to request
$request->validate([
'species' => 'required'
]);
$petid = $request->input('petid');
$species = $request->input('species');
And in js display any errors in a div
error: function (data, ajaxOptions, thrownError) {
var status = data.status;
if (data.status === 422) {
$.each(data.responseJSON.errors, function (key, value) {
$('#msg').append('<div>' + value + '</div>');
});
}
if (status === 403 || status === 500) {
$('#msg').text("Not Auth");
}
}
});