переопределите методы LinkPager, которые генерируют ссылки для пагинации
<?=$edit_form->field($model, 'serv1')->checkbox([ 'value' => '1', 'checked ' => true])->label('');?>
Note
hash() truncates the value returned from an object’s custom __hash__() method to the size of a Py_ssize_t. This is typically 8 bytes on 64-bit builds and 4 bytes on 32-bit builds. If an object’s __hash__() must interoperate on builds of different bit sizes, be sure to check the width on all supported builds.