diff --git a/includes/Helpers/AbilityHelper.php b/includes/Helpers/AbilityHelper.php
index a3cf273..bf51d4c 100644
--- a/includes/Helpers/AbilityHelper.php
+++ b/includes/Helpers/AbilityHelper.php
@@ -16,22 +16,18 @@ class AbilityHelper {
     }
 
     public function can(string $action, mixed $subject) : bool {
-        if ($this->user === null) {
-            return false;
-        }
-
         $is_destructive = in_array($action, self::DESTRUCTIVE_ACTIONS);
 
         if (is_a($subject, 'Paste')) {
             if (($subject->visible == Paste::VISIBILITY_PRIVATE) || $is_destructive) {
-                return $subject->user_id === $this->user->id;
+                return $this->user !== null && $subject->user_id === $this->user->id;
             }
 
             return true;
         }
 
         if (is_a($subject, 'User')) {
-            return !$is_destructive || $subject->id === $this->user->id;
+            return !$is_destructive || ($this->user !== null && $subject->id === $this->user->id);
         }
 
         return false;
diff --git a/theme/bulma/errors.php b/theme/bulma/errors.php
index c5cd6bd..3fb32d6 100644
--- a/theme/bulma/errors.php
+++ b/theme/bulma/errors.php
@@ -5,7 +5,7 @@
             <div class="bd-lead">
                 <?php if (isset($error)): ?>
                     <p class="help is-danger subtitle is-6"><?= pp_html_escape($error) ?></p>
-                    <?php if ($password_required): ?>
+                    <?php if (isset($password_required) && $password_required): ?>
                         <h1 class="title is-5">This paste is password-protected.</h1>
                         <form method="post">
                             <div class="field has-addons">