recent content block with thumbnail?
to slecet image uri you have to do

selest uri from node
join field_data_filed_image on field_data_filed_image.entity_id = node.nid
join file_managed on filed_image_fid = fid


anfd you can use this function to get thumbnail using uri

&lt;img class="image" src="&lt;?php print image_style_url('thumbnail', $block-&gt;uri) ?&gt;"/&gt;