memberdb/resources/theme/backend/sbadmin/widgets/button.blade.php

<button type="button" class="btn btn-{{{ isset($class) ? $class : 'default' }}} {{{ isset($rounded) ? 'btn-rounded' : ''}}} {{{ isset($bordered) ? 'btn-bordered' : ''}}} @if (isset($size)) btn-{{$size}} @endif  {{{ isset($disabled) ? 'disabled' : '' }}}">{{ $value }}</button>