Get date by url (string not was recognized datetime)

I'm passing an initial and final date per parameter (depending on the image), as you can see the bars on the localhost (/) I'm passing% 20 and graph generation usually occurs, however on the server you're reporting error 500 and when inspecting I see you have the message "string was not recognized datetime". What can be happening since localhost works and the server does not?

        function urldecode(str) {
        return decodeURIComponent((str + '').replace(/\+/g, '%20'));
    }

Here when loading page:

$(window).on('load', function () {
        var data = getParameterByName('data');
        var start = urldecode(getParameterByName('dataInicio'));
        var end = urldecode(getParameterByName('dataFinal'));

        DrawonLoad(start, end, "bottom", 300, "center", 10, data);
        buscaAtosPraticados();
        DrawonLoad2(start, end, "bottom", 300, "center", 10, data);
        buscaCertidoes();
        DrawonLoad3(start, end, "bottom", 300, "center", 10, data);
        buscaBalcaoCRT();
    });

Here's where I call ajax:

function DrawonLoad(dataInicio, dataFinal, posicaoLegenda, tamanho, alinhamento, tamanhoFonte, data) {
        $.ajax({
            type: 'GET',
            url: '/Home/FiltroData?dataInicio=' + urldecode(dataInicio) + '&dataFinal=' + urldecode(dataFinal) + '&data=' + data,
            success: function (chartsdata) {