diff --git a/Web/Models/Entities/Video.php b/Web/Models/Entities/Video.php
index 07923a1f..8dbfb7a1 100644
--- a/Web/Models/Entities/Video.php
+++ b/Web/Models/Entities/Video.php
@@ -109,7 +109,7 @@ class Video extends Media
         } elseif (!is_null($this->getRecord()->link)) {
             return Video::TYPE_EMBED;
         }
-        return VIDEO::TYPE_UNKNOWN;
+        return Video::TYPE_UNKNOWN;
     }
 
     public function getVideoDriver(): ?VideoDriver
@@ -240,7 +240,7 @@ class Video extends Media
         $this->save();
     }
 
-    public static function fastMake(int $owner, string $name = "Unnamed Video.ogv", string $description = "", array $file, bool $unlisted = true, bool $anon = false): Video
+    public static function fastMake(int $owner, string $name, string $description, array $file, bool $unlisted = true, bool $anon = false): Video
     {
         if (OPENVK_ROOT_CONF['openvk']['preferences']['videos']['disableUploading']) {
             exit(VIDEOS_FRIENDLY_ERROR);
diff --git a/Web/Presenters/OpenVKPresenter.php b/Web/Presenters/OpenVKPresenter.php
index 2b43a8f1..478670f0 100644
--- a/Web/Presenters/OpenVKPresenter.php
+++ b/Web/Presenters/OpenVKPresenter.php
@@ -9,6 +9,7 @@ use Chandler\MVC\SimplePresenter;
 use Chandler\Session\Session;
 use Chandler\Security\Authenticator;
 use Latte\Engine as TemplatingEngine;
+use Nette\InvalidStateException as ISE;
 use openvk\Web\Models\Entities\IP;
 use openvk\Web\Themes\Themepacks;
 use openvk\Web\Models\Repositories\{IPs, Users, APITokens, Tickets, Reports, CurrentUser, Posts};
@@ -129,7 +130,7 @@ abstract class OpenVKPresenter extends SimplePresenter
         }
 
         if ($throw) {
-            throw new SecurityPolicyViolationException("Permission error");
+            throw new ISE("Permission error");
         } else {
             $this->flashFail("err", tr("not_enough_permissions"), tr("not_enough_permissions_comment"));
         }
diff --git a/Web/Presenters/WallPresenter.php b/Web/Presenters/WallPresenter.php
index b64c2af9..5e579f4f 100644
--- a/Web/Presenters/WallPresenter.php
+++ b/Web/Presenters/WallPresenter.php
@@ -265,8 +265,11 @@ final class WallPresenter extends OpenVKPresenter
         $this->assertUserLoggedIn();
         $this->willExecuteWriteAction();
 
-        $wallOwner = ($wall > 0 ? (new Users())->get($wall) : (new Clubs())->get($wall * -1))
-                     ?? $this->flashFail("err", tr("failed_to_publish_post"), tr("error_4"));
+        $wallOwner = ($wall > 0 ? (new Users())->get($wall) : (new Clubs())->get($wall * -1));
+
+        if ($wallOwner === null) {
+            $this->flashFail("err", tr("failed_to_publish_post"), tr("error_4"));
+        }
 
         if ($wallOwner->isBanned()) {
             $this->flashFail("err", tr("error"), tr("forbidden"));
@@ -568,8 +571,11 @@ final class WallPresenter extends OpenVKPresenter
         }
         $user = $this->user->id;
 
-        $wallOwner = ($wall > 0 ? (new Users())->get($wall) : (new Clubs())->get($wall * -1))
-                     ?? $this->flashFail("err", tr("failed_to_delete_post"), tr("error_4"));
+        $wallOwner = ($wall > 0 ? (new Users())->get($wall) : (new Clubs())->get($wall * -1));
+        
+        if ($wallOwner === null) {
+            $this->flashFail("err", tr("failed_to_delete_post"), tr("error_4"));
+        }
 
         if ($wallOwner->isBanned()) {
             $this->flashFail("err", tr("error"), tr("forbidden"));