diff --git a/CHANGELOG.md b/CHANGELOG.md
index f703d6f2c..f439c2c49 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,7 @@
 
 1. [](#new)
     * Added support to get image size for SVG vector images [#3533](https://github.com/getgrav/grav/pull/3533)
+    * Fixed phpstan issues (All level 2, Framework level 5)
 2. [](#bugfix)
     * Fixed `'mbstring' extension is not loaded` error, use Polyfill instead [#3504](https://github.com/getgrav/grav/pull/3504)
 
diff --git a/composer.json b/composer.json
index 2f7aa1f95..436f97291 100644
--- a/composer.json
+++ b/composer.json
@@ -116,8 +116,8 @@
     "scripts": {
         "api-17": "vendor/bin/phpdoc-md generate system/src > user/pages/14.api/default.17.md",
         "post-create-project-cmd": "bin/grav install",
-        "phpstan": "vendor/bin/phpstan analyse -l 1 -c ./tests/phpstan/phpstan.neon --memory-limit=720M system/src",
-        "phpstan-framework": "vendor/bin/phpstan analyse -l 4 -c ./tests/phpstan/phpstan.neon --memory-limit=480M system/src/Grav/Framework system/src/Grav/Events system/src/Grav/Installer",
+        "phpstan": "vendor/bin/phpstan analyse -l 2 -c ./tests/phpstan/phpstan.neon --memory-limit=720M system/src",
+        "phpstan-framework": "vendor/bin/phpstan analyse -l 5 -c ./tests/phpstan/phpstan.neon --memory-limit=480M system/src/Grav/Framework system/src/Grav/Events system/src/Grav/Installer",
         "phpstan-plugins": "vendor/bin/phpstan analyse -l 1 -c ./tests/phpstan/plugins.neon --memory-limit=400M user/plugins",
         "test": "vendor/bin/codecept run unit",
         "test-windows": "vendor\\bin\\codecept run unit"
diff --git a/composer.lock b/composer.lock
index a90114272..06c0bbf38 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4748,16 +4748,16 @@
         },
         {
             "name": "phpunit/php-code-coverage",
-            "version": "9.2.10",
+            "version": "9.2.11",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/php-code-coverage.git",
-                "reference": "d5850aaf931743067f4bfc1ae4cbd06468400687"
+                "reference": "665a1ac0a763c51afc30d6d130dac0813092b17f"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/php-code-coverage/zipball/d5850aaf931743067f4bfc1ae4cbd06468400687",
-                "reference": "d5850aaf931743067f4bfc1ae4cbd06468400687",
+                "url": "https://api.github.com/repos/sebastianbergmann/php-code-coverage/zipball/665a1ac0a763c51afc30d6d130dac0813092b17f",
+                "reference": "665a1ac0a763c51afc30d6d130dac0813092b17f",
                 "shasum": ""
             },
             "require": {
@@ -4813,7 +4813,7 @@
             ],
             "support": {
                 "issues": "https://github.com/sebastianbergmann/php-code-coverage/issues",
-                "source": "https://github.com/sebastianbergmann/php-code-coverage/tree/9.2.10"
+                "source": "https://github.com/sebastianbergmann/php-code-coverage/tree/9.2.11"
             },
             "funding": [
                 {
@@ -4821,7 +4821,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2021-12-05T09:12:13+00:00"
+            "time": "2022-02-18T12:46:09+00:00"
         },
         {
             "name": "phpunit/php-file-iterator",
@@ -5066,16 +5066,16 @@
         },
         {
             "name": "phpunit/phpunit",
-            "version": "9.5.13",
+            "version": "9.5.14",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/phpunit.git",
-                "reference": "597cb647654ede35e43b137926dfdfef0fb11743"
+                "reference": "1883687169c017d6ae37c58883ca3994cfc34189"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/597cb647654ede35e43b137926dfdfef0fb11743",
-                "reference": "597cb647654ede35e43b137926dfdfef0fb11743",
+                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/1883687169c017d6ae37c58883ca3994cfc34189",
+                "reference": "1883687169c017d6ae37c58883ca3994cfc34189",
                 "shasum": ""
             },
             "require": {
@@ -5153,7 +5153,7 @@
             ],
             "support": {
                 "issues": "https://github.com/sebastianbergmann/phpunit/issues",
-                "source": "https://github.com/sebastianbergmann/phpunit/tree/9.5.13"
+                "source": "https://github.com/sebastianbergmann/phpunit/tree/9.5.14"
             },
             "funding": [
                 {
@@ -5165,7 +5165,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2022-01-24T07:33:35+00:00"
+            "time": "2022-02-18T12:54:07+00:00"
         },
         {
             "name": "psr/http-client",
diff --git a/index.php b/index.php
index 5393b8cff..b6b86e1c0 100644
--- a/index.php
+++ b/index.php
@@ -45,10 +45,7 @@ $grav = Grav::instance(array('loader' => $loader));
 // Process the page
 try {
     $grav->process();
-} catch (\Error $e) {
-    $grav->fireEvent('onFatalException', new Event(array('exception' => $e)));
-    throw $e;
-} catch (\Exception $e) {
+} catch (\Error|\Exception $e) {
     $grav->fireEvent('onFatalException', new Event(array('exception' => $e)));
     throw $e;
 }
diff --git a/system/src/Grav/Common/Assets.php b/system/src/Grav/Common/Assets.php
index 134c62fba..23878a390 100644
--- a/system/src/Grav/Common/Assets.php
+++ b/system/src/Grav/Common/Assets.php
@@ -525,8 +525,8 @@ class Assets extends PropertyObject
     /**
      * Build the Javascript Modules tags
      *
-     * @param $group
-     * @param $attributes
+     * @param string $group
+     * @param array $attributes
      * @return string
      */
     public function jsModule($group = 'head', $attributes = [])
@@ -534,6 +534,11 @@ class Assets extends PropertyObject
         return $this->render(self::JS_MODULE, $group, $attributes);
     }
 
+    /**
+     * @param string $group
+     * @param array $attributes
+     * @return string
+     */
     public function all($group = 'head', $attributes = [])
     {
         $output = $this->css($group, $attributes, false);
@@ -543,11 +548,19 @@ class Assets extends PropertyObject
         return $output;
     }
 
+    /**
+     * @param class-string $type
+     * @return bool
+     */
     protected function isValidType($type)
     {
         return in_array($type, [self::CSS_TYPE, self::JS_TYPE, self::JS_MODULE_TYPE]);
     }
 
+    /**
+     * @param class-string $type
+     * @return string
+     */
     protected function getBaseType($type)
     {
         switch ($type) {
diff --git a/system/src/Grav/Common/Assets/BlockAssets.php b/system/src/Grav/Common/Assets/BlockAssets.php
index 798bdd304..7d9796090 100644
--- a/system/src/Grav/Common/Assets/BlockAssets.php
+++ b/system/src/Grav/Common/Assets/BlockAssets.php
@@ -55,7 +55,7 @@ class BlockAssets
 
     /**
      * @param Assets $assets
-     * @param array $groups
+     * @param array $list
      * @return void
      */
     protected static function registerFrameworks(Assets $assets, array $list): void
diff --git a/system/src/Grav/Common/Backup/Backups.php b/system/src/Grav/Common/Backup/Backups.php
index 9c23908c4..ff4789d86 100644
--- a/system/src/Grav/Common/Backup/Backups.php
+++ b/system/src/Grav/Common/Backup/Backups.php
@@ -104,7 +104,7 @@ class Backups
      */
     public function getBackupDownloadUrl($backup, $base_url)
     {
-        $param_sep = $param_sep = Grav::instance()['config']->get('system.param_sep', ':');
+        $param_sep = Grav::instance()['config']->get('system.param_sep', ':');
         $download = urlencode(base64_encode(Utils::basename($backup)));
         $url      = rtrim(Grav::instance()['uri']->rootUrl(true), '/') . '/' . trim(
             $base_url,
diff --git a/system/src/Grav/Common/Flex/Types/Pages/PageIndex.php b/system/src/Grav/Common/Flex/Types/Pages/PageIndex.php
index c0ca5c405..f3978bc1d 100644
--- a/system/src/Grav/Common/Flex/Types/Pages/PageIndex.php
+++ b/system/src/Grav/Common/Flex/Types/Pages/PageIndex.php
@@ -606,8 +606,10 @@ class PageIndex extends FlexPageIndex implements PageCollectionInterface
                 }
             }
 
+            /** @var PageCollection|PageIndex $children */
+            $children = $page->children();
             /** @var PageIndex $children */
-            $children = $page->children()->getIndex();
+            $children = $children->getIndex();
             $selectedChildren = $children->filterBy($filters, true);
 
             /** @var Header $header */
@@ -686,6 +688,8 @@ class PageIndex extends FlexPageIndex implements PageCollectionInterface
                     $extras = array_filter($extras, static function ($v) {
                         return $v !== null;
                     });
+
+                    /** @var PageIndex $tmp */
                     $tmp = $child->children()->getIndex();
                     $child_count = $tmp->count();
                     $count = $filters ? $tmp->filterBy($filters, true)->count() : null;
diff --git a/system/src/Grav/Common/Flex/Types/Pages/PageObject.php b/system/src/Grav/Common/Flex/Types/Pages/PageObject.php
index fed11b437..a05f0eb42 100644
--- a/system/src/Grav/Common/Flex/Types/Pages/PageObject.php
+++ b/system/src/Grav/Common/Flex/Types/Pages/PageObject.php
@@ -625,7 +625,14 @@ class PageObject extends FlexPageObject
 
             // If current filter does not match, we still may have match as a parent.
             if ($matches === false) {
-                return $recursive && $this->children()->getIndex()->filterBy($filters, true)->count() > 0;
+                if (!$recursive) {
+                    return false;
+                }
+
+                /** @var PageIndex $index */
+                $index = $this->children()->getIndex();
+
+                return $index->filterBy($filters, true)->count() > 0;
             }
         }
 
diff --git a/system/src/Grav/Common/Media/Interfaces/MediaObjectInterface.php b/system/src/Grav/Common/Media/Interfaces/MediaObjectInterface.php
index 4af3052b0..933475962 100644
--- a/system/src/Grav/Common/Media/Interfaces/MediaObjectInterface.php
+++ b/system/src/Grav/Common/Media/Interfaces/MediaObjectInterface.php
@@ -16,6 +16,8 @@ use Grav\Common\Data\Data;
  * Class implements media object interface.
  *
  * @property string $type
+ * @property string $filename
+ * @property string $filepath
  */
 interface MediaObjectInterface extends \Grav\Framework\Media\Interfaces\MediaObjectInterface, ArrayAccess
 {
diff --git a/system/src/Grav/Common/Page/Medium/VectorImageMedium.php b/system/src/Grav/Common/Page/Medium/VectorImageMedium.php
index 249f96b5c..5f5ebe140 100644
--- a/system/src/Grav/Common/Page/Medium/VectorImageMedium.php
+++ b/system/src/Grav/Common/Page/Medium/VectorImageMedium.php
@@ -53,10 +53,10 @@ class VectorImageMedium extends StaticImageMedium
         }
 
         // Get the size from svg image.
-        if ($attr->width > 0 && $attr->height > 0) {
-            $width = $attr->width;
-            $height = $attr->height;
-        } elseif ($attr->viewBox && \count($size = explode(' ', $attr->viewBox)) === 4) {
+        if ($attr->width && $attr->height) {
+            $width = (string)$attr->width;
+            $height = (string)$attr->height;
+        } elseif ($attr->viewBox && \count($size = explode(' ', (string)$attr->viewBox)) === 4) {
             [,$width,$height,] = $size;
         }
 
diff --git a/system/src/Grav/Common/Page/Pages.php b/system/src/Grav/Common/Page/Pages.php
index f9ca50e48..f5c4d0f9a 100644
--- a/system/src/Grav/Common/Page/Pages.php
+++ b/system/src/Grav/Common/Page/Pages.php
@@ -736,7 +736,13 @@ class Pages
                 break;
             case 'siblings':
                 $parent = $page->parent();
-                $collection = $parent ? $parent->children()->remove($page->path()) : new Collection();
+                if ($parent) {
+                    /** @var Collection $collection */
+                    $collection = $parent->children();
+                    $collection = $collection->remove($page->path());
+                } else {
+                    $collection = new Collection();
+                }
                 break;
             case 'descendants':
                 $collection = $this->all($page)->remove($page->path())->pages();
@@ -1041,9 +1047,14 @@ class Pages
                     $this->grav->redirectLangSafe($page->redirect());
                 }
 
-                if (!$routable && ($child = $page->children()->visible()->routable()->published()->first()) !== null) {
-                    // Redirect to the first visible child as current page isn't routable.
-                    $this->grav->redirectLangSafe($child->route());
+                if (!$routable) {
+                    /** @var Collection $children */
+                    $children = $page->children()->visible()->routable()->published();
+                    $child = $children->first();
+                    if ($child !== null) {
+                        // Redirect to the first visible child as current page isn't routable.
+                        $this->grav->redirectLangSafe($child->route());
+                    }
                 }
             }
 
diff --git a/system/src/Grav/Common/Twig/TwigEnvironment.php b/system/src/Grav/Common/Twig/TwigEnvironment.php
index 6b2a86bef..dba884693 100644
--- a/system/src/Grav/Common/Twig/TwigEnvironment.php
+++ b/system/src/Grav/Common/Twig/TwigEnvironment.php
@@ -11,6 +11,8 @@ namespace Grav\Common\Twig;
 
 use Twig\Environment;
 use Twig\Error\LoaderError;
+use Twig\Loader\ExistsLoaderInterface;
+use Twig\Loader\LoaderInterface;
 use Twig\Template;
 use Twig\TemplateWrapper;
 
@@ -41,8 +43,12 @@ class TwigEnvironment extends Environment
             }
 
             // Optimization: Avoid throwing an exception when it would be ignored anyway.
-            if (1 !== $count && !$this->getLoader()->exists($name)) {
-                continue;
+            if (1 !== $count) {
+                /** @var LoaderInterface|ExistsLoaderInterface $loader */
+                $loader = $this->getLoader();
+                if (!$loader->exists($name)) {
+                    continue;
+                }
             }
 
             // Throws LoaderError: Unable to find template "%s".