Render a field contained inside of another field
I think the issue here is that each of those paragraph groupings contain various elements that are array keys. For example, if you dpm up to $content['field_paragraph'], you may see values that look like this: 



I think the issue is, due to your loops, your trying to render/loop through things that aren't objects. To get around this, you might want to try checkin if the key is numeric before proceeding on. 

Something along the lines like this:

&lt;?php
    foreach($content['field_paragraph'] as $key=&gt;$array){
  if (is_int($key)) {
    foreach ( $array['entity']['paragraphs_item'] as $key2=&gt;$item ) {
    if ( is_int($key2) ) {
      print render($item['field_body']);
    }
  }
  }
}

?&gt;


Note the is_int($key), that's what you need to get the errors to go away. Note my code has my own field names in it, so you'll just need to switch yours in.