Hear is my layout file same code is working fine in magento 2.1.7 but not working in magento 2.2.2. I don't know why it's not working :
<referenceContainer name="sidebar.main">
<block class="Magento\LayeredNavigation\Block\Navigation\Category" name="catalog.leftnav" before="-" template="Demo_Shopby::layer/view.phtml">
<block class="Demo\Shopby\Block\Navigation\State" name="catalog.navigation.state" as="state" />
<block class="Magento\LayeredNavigation\Block\Navigation\FilterRenderer" name="catalog.navigation.renderer" as="renderer" template="layer/filter.phtml"/>
</block>
</referenceContainer>
