Customizing the Read More

Hello
I want to read more button for 0 text in blog posts. I tried alot with
(the excerpt) code of wordpress but its doesn’t work for me if i use (the excerpt) code read more showing double.So inshort i want to appear my read more button for no(0) text in my blog posts. my theme name is (WHO I AM) .
Below is my readmore button detail. please help.

function whoiam_excerpt_more($more) {
  global $post;
  return '…<div class="text-left"><a>ID) . '" class="btn btn-xs btn-flat-solid primary-btn">' . '' . __('Read More', 'whoiam') . '</a></div>';
 }
 add_filter('excerpt_more', 'whoiam_excerpt_more');