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Upvote or downvote does not display
Whenever I click on the upvote or downvote button nothing happens, when I look at the video the upvote/downvote button does have a reaction to it. Here's the snapshot: https://w.trhou.se/ra5vh0nast
I checked your code and it seems that on lines 4 and 7 of your book.php file you have written '<?p' instead of '<?php'. Change that and it should work :)