Select2 doesn't automatically set selected value on CentOS 7

I have a select2 to display list of timezone and automatically set selected value, codes below works properly in development environment (ASP MVC Net Core 3.1), Visual Studio 2019, but it doesn't automatically set selected value when it runs on CentOS 7, strange for me, anybody can give me an advice?

    headers: {
     api_key: '@PTX.Models.AppSettingsModel.Application.API_Key',
     api_secret: '@PTX.Models.AppSettingsModel.Application.API_Secret'
    type: 'GET',
    url: getDeploymentPath() + '/User/Timezone/',
    dataType: 'json'
    }).done(function (data)
        result = $.map(data, function (x)
        return {
         text: x.text
         data: result,
         placeholder: "Select timezone",
         escapeMarkup: function (markup)
            return markup;


       // Have tried below, but no luck :(
       //$("#timezone").select2('data', { id: _timezone_id, text: _timezone_text });
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