diff --git a/Application/Component/DebugBarComponent.php b/Application/Component/DebugBarComponent.php
index eafc4cb..228b520 100644
--- a/Application/Component/DebugBarComponent.php
+++ b/Application/Component/DebugBarComponent.php
@@ -22,6 +22,7 @@ use DebugBar\Bridge\MonologCollector;
 use DebugBar\DebugBarException;
 use DebugBar\JavascriptRenderer;
 use DebugBar\StandardDebugBar;
+use Doctrine\DBAL\Connection;
 use Doctrine\DBAL\Logging\DebugStack;
 use Monolog\Logger;
 use OxidEsales\Eshop\Core\Controller\BaseController;
@@ -85,6 +86,7 @@ class DebugBarComponent extends BaseController
     {
         $db = DatabaseProvider::getDb();
         $debugStack = new DebugStack();
+        /** @var Connection $connection */
         $connection = $this->getNonPublicProperty($db, 'connection');
         $connection->getConfiguration()->setSQLLogger($debugStack);
         return new DoctrineCollector($debugStack);
@@ -100,12 +102,13 @@ class DebugBarComponent extends BaseController
     }
 
     /**
-     * @param  $object
-     * @param $propName
+     * @param object $object
+     * @param string $propName
+     *
      * @return mixed
      * @throws ReflectionException
      */
-    protected function getNonPublicProperty($object, $propName)
+    protected function getNonPublicProperty(object $object, string $propName)
     {
         $reflection = new ReflectionClass($object);
         $property = $reflection->getProperty($propName);
diff --git a/Modules/Core/ShopControl_DebugBar.php b/Modules/Core/ShopControl_DebugBar.php
index f657fbd..2444195 100644
--- a/Modules/Core/ShopControl_DebugBar.php
+++ b/Modules/Core/ShopControl_DebugBar.php
@@ -16,6 +16,7 @@ declare(strict_types=1);
 namespace D3\DebugBar\Modules\Core;
 
 use D3\DebugBar\Application\Component\DebugBarComponent;
+use OxidEsales\Eshop\Application\Controller\FrontendController;
 use OxidEsales\Eshop\Core\Registry;
 
 class ShopControl_DebugBar extends ShopControl_DebugBar_parent
@@ -49,11 +50,11 @@ class ShopControl_DebugBar extends ShopControl_DebugBar_parent
     public function __destruct()
     {
         if (!isAdmin()) {
-            /** @var DebugBarComponent $debugBarComponent */
+            /** @var FrontendController $activeView */
             $activeView =  Registry::getConfig()->getTopActiveView();
-            if ($activeView &&
-                $debugBarComponent = $activeView->getComponent(DebugBarComponent::class)
-            ) {
+            /** @var DebugBarComponent|null $debugBarComponent */
+            $debugBarComponent = $activeView->getComponent(DebugBarComponent::class);
+            if ($debugBarComponent) {
                 echo $debugBarComponent->getRenderer()->renderHead();
                 $debugBarComponent->addTimelineMessures();
                 echo $debugBarComponent->getRenderer()->render();
diff --git a/Modules/functions.php b/Modules/functions.php
index f85513a..70fa3f5 100644
--- a/Modules/functions.php
+++ b/Modules/functions.php
@@ -16,9 +16,14 @@ declare(strict_types=1);
 use D3\DebugBar\Application\Component\DebugBarComponent;
 use D3\DebugBar\Application\Models\TimeDataCollectorHandler;
 use DebugBar\DataCollector\MessagesCollector;
+use DebugBar\DebugBarException;
 use OxidEsales\Eshop\Core\Registry;
 
-function startProfile($sProfileName)
+/**
+ * @param $sProfileName
+ * @return void
+ */
+function startProfile(string $sProfileName): void
 {
     $trace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
     $trace[0] = $sProfileName;
@@ -39,7 +44,13 @@ function startProfile($sProfileName)
     $aStartTimes[$sProfileName] = microtime(true);
 }
 
-function stopProfile($sProfileName)
+/**
+ * @param string $sProfileName
+ *
+ * @return void
+ * @throws DebugBarException
+ */
+function stopProfile(string $sProfileName): void
 {
     $trace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
     $trace[0] = $sProfileName;
@@ -61,13 +72,22 @@ function stopProfile($sProfileName)
     $aStartTimes[$sProfileName] = microtime(true);
 }
 
-function debugVar($mVar, $blToFile = false)
+/**
+ * @param mixed $mVar
+ * @param bool $blToFile
+ *
+ * @throws DebugBarException
+ * @return void
+ */
+function debugVar($mVar, bool $blToFile = false): void
 {
     if ($blToFile) {
         $out = var_export($mVar, true);
         $f = fopen(Registry::getConfig()->getConfigParam('sCompileDir') . "/vardump.txt", "a");
-        fwrite($f, $out);
-        fclose($f);
+        if (is_resource($f)) {
+            fwrite( $f, $out );
+            fclose( $f );
+        }
     } else {
         if (!isAdmin()) {
             $activeView = Registry::getConfig()->getTopActiveView();
diff --git a/phpstan.neon b/phpstan.neon
index 35db9d8..3699261 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -1,9 +1,12 @@
 parameters:
+    paths:
+        - .
     scanFiles:
         - IntelliSenseHelper.php
         - ../../oxid-esales/oxideshop-ce/source/oxfunctions.php
     level: 9
-    phpVersion: 70100
+    phpVersion: 70300
     checkMissingIterableValueType: false
     ignoreErrors:
-        - '#Psr\\Container\\ContainerExceptionInterface is not subtype of Throwable#'
+        - '#setConfigParam\(\) expects string, array given.#'
+        - '#Offset .* does not exist on array{function: .*}.#'