Bootstrap File Input - Krajee, Submiting Files through Request

Question

In Bootstrap File Input, I'm trying to submit the files through php/laravel post request. When i select multiple files at once, i get all files in the request. However, when files are selected individually one by one and submited i only get the last file in the request. Here is my fileinput configuration

 $('#' + input_id).fileinput({
            theme: 'fas',
            initialCaption: 'No file selected',
            allowedFileExtensions: ['jpg', 'jpeg', 'png', 'gif', 'pdf', 'xls', 'csv', 'doc', 'docx', 'xlsx', 'ppt', 'pptx', 'eml'],
            uploadUrl: upload_url,
            autoUpload : false,
            autoReplace: true,
            uploadAsync: false,
            showCancel: false,
            showRemove: false,
            showClose: false,
            showUpload: false,
            maxFileCount: 50,
            browseOnZoneClick: true,
            showPreview: true,
            dropZoneEnabled: true,
            hideThumbnailContent: false,
            initialPreviewAsData: true,
            initialPreview: [],
            initialPreviewConfig: [],
            overwriteInitial: false,
            previewFileIcon: '<i class="fas fa-file"></i>',
            allowedPreviewTypes: ['image', 'pdf', 'text'],
            previewFileIconSettings: {
                'docx': '<i class="fas fa-file-word text-primary"></i>',
                'xlsx': '<i class="fas fa-file-excel text-success"></i>',
                'pptx': '<i class="fas fa-file-powerpoint text-danger"></i>',
                'jpg': '<i class="fas fa-file-image text-warning"></i>',
                'pdf': '<i class="fas fa-file-pdf text-danger"></i>',
                'zip': '<i class="fas fa-file-archive text-muted"></i>',
            },
            fileActionSettings: {
                showDrag: false,
            },
        }).on("filepredelete", function (jqXHR) {
            var abort = true;
            if (confirm("Are you sure you want to delete this image?")) {
                abort = false;
            }
            return abort; // you can also send any data/object that you can receive on `filecustomerror` event
        });