Looking for help

Hello, I am redirecting to the subject opened with this code gives error.
SMF 2.1 RC1
[code]<button type="button" class="close">
      <a href="', $board['last_post']['href'], '">
         <i class="fas fa-chevron-right t-muted" aria-hidden="true"></i>
      </a>
   <...

from Simple Machines Community Forum https://ift.tt/2NBwYVU
via IFTTT