Fix for smilies upload

app/bootstrap.php

@@ -55,7 +55,7 @@ $c->PUBLIC_URL = $c->BASE_URL . $forkPublicPrefix;
 $c->FORK_REVISION = 33;
 $c->START         = $forkStart;
 $c->DIR_APP       = __DIR__;
-$c->DIR_PUBLIC    = __DIR__ . '/../public';
+$c->DIR_PUBLIC    = \realpath(__DIR__ . '/../public');
 $c->DIR_CACHE     = __DIR__ . '/cache';
 $c->DIR_VIEWS     = __DIR__ . '/templates';
 $c->DIR_LANG      = __DIR__ . '/lang';