diff --git a/.github/workflows/phpstan.yml b/.github/workflows/phpstan.yml
new file mode 100644
index 0000000..31c5f8e
--- /dev/null
+++ b/.github/workflows/phpstan.yml
@@ -0,0 +1,21 @@
+name: PHPStan
+
+on: [push, pull_request]
+
+jobs:
+  phpstan:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@2.26.0
+        with:
+          php-version: '8.1'
+
+      - name: Install composer dependencies
+        uses: ramsey/composer-install@v2
+
+      - name: Run PHPStan
+        run: vendor/bin/phpstan --error-format=github
diff --git a/.gitignore b/.gitignore
index 4a6e97a..067c442 100644
--- a/.gitignore
+++ b/.gitignore
@@ -27,4 +27,6 @@ npm-debug.log
 /log
 
 package-lock.json
-yarn.lock
\ No newline at end of file
+yarn.lock
+
+build
diff --git a/README.md b/README.md
index d67a58c..80fd7c3 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # Telegram Git Notifier
 
-This package provides the ability to integrate the Telegram messaging service and GitHub/GitLab.
+This package provides the ability to integrate the Telegram messaging service and GitHub and GitLab.
 With this package,
 you can create a Telegram bot to receive notifications from GitHub or GitLab events
 and manage customization through messages and buttons on Telegram.
@@ -18,7 +18,7 @@ and manage customization through messages and buttons on Telegram.
 
 ## 📋 Requirements
 
-- PHP ^8.0
+- PHP ^8.1
 - Composer
 - Telegram Bot
 
diff --git a/common/helpers.php b/common/helpers.php
index 90119f6..ba9a497 100755
--- a/common/helpers.php
+++ b/common/helpers.php
@@ -124,10 +124,11 @@ function config(string $string): mixed
      * @param string $partialPath
      * @param array $data
      *
-     * @return bool|string
+     * @return null|string
      */
-    function view(string $partialPath, array $data = []): bool|string
+    function view(string $partialPath, array $data = []): null|string
     {
-        return (new ConfigHelper())->getTemplateData($partialPath, $data);
+        $content = (new ConfigHelper())->getTemplateData($partialPath, $data);
+        return $content ?: null;
     }
 }
diff --git a/composer.json b/composer.json
index 3de2514..1577599 100644
--- a/composer.json
+++ b/composer.json
@@ -34,12 +34,18 @@
     ]
   },
   "require": {
-    "php": "^8.0",
+    "php": "^8.1",
     "eleirbag89/telegrambotphp": "^1.4",
     "guzzlehttp/guzzle": "^7.8",
     "symfony/http-foundation": "^6.3",
     "vlucas/phpdotenv": "^5.5"
   },
+  "require-dev": {
+    "phpstan/phpstan": "^1.10.39"
+  },
+  "scripts": {
+    "analyse": "vendor/bin/phpstan"
+  },
   "support": {
     "issues": "https://github.com/lbiltech/telegram-git-notifier/issues"
   },
diff --git a/phpstan.neon.dist b/phpstan.neon.dist
new file mode 100644
index 0000000..2e837cd
--- /dev/null
+++ b/phpstan.neon.dist
@@ -0,0 +1,6 @@
+parameters:
+    level: 8
+    paths:
+        - src
+    tmpDir: build/phpstan
+    checkMissingIterableValueType: false
diff --git a/src/Exceptions/EntryNotFoundException.php b/src/Exceptions/EntryNotFoundException.php
index 2e20763..04b3bf6 100644
--- a/src/Exceptions/EntryNotFoundException.php
+++ b/src/Exceptions/EntryNotFoundException.php
@@ -9,12 +9,12 @@ public static function fileNotFound(): self
         return new self('File not found');
     }
 
-    public static function configNotFound($config): self
+    public static function configNotFound(string $config): self
     {
         return new self("Config {$config} not found");
     }
 
-    public static function viewNotFound($view): self
+    public static function viewNotFound(string $view): self
     {
         return new self("View {$view} not found");
     }
diff --git a/src/Exceptions/TelegramGitNotifierException.php b/src/Exceptions/TelegramGitNotifierException.php
index e9e0337..3d201ea 100644
--- a/src/Exceptions/TelegramGitNotifierException.php
+++ b/src/Exceptions/TelegramGitNotifierException.php
@@ -8,11 +8,11 @@ class TelegramGitNotifierException extends Exception
 {
     public static function isEmpty(): self
     {
-        return new static('Telegram Git Notifier is empty');
+        return new self('Telegram Git Notifier is empty');
     }
 
     public static function invalid(): self
     {
-        return new static('Telegram Git Notifier is invalid');
+        return new self('Telegram Git Notifier is invalid');
     }
 }
diff --git a/src/Helpers/ConfigHelper.php b/src/Helpers/ConfigHelper.php
index 7626aba..d345474 100644
--- a/src/Helpers/ConfigHelper.php
+++ b/src/Helpers/ConfigHelper.php
@@ -8,6 +8,9 @@
 
 class ConfigHelper
 {
+    /**
+     * @var array<string, mixed>
+     */
     public array $config;
 
     public function __construct()
@@ -39,12 +42,12 @@ public function execConfig(string $string): mixed
     /**
      * Return template data
      *
-     * @param $partialPath
+     * @param string $partialPath
      * @param array $data
      *
      * @return bool|string
      */
-    public function getTemplateData($partialPath, array $data = []): bool|string
+    public function getTemplateData(string $partialPath, array $data = []): bool|string
     {
         $viewPathFile = $this->execConfig('telegram-git-notifier.view.path') . '/'
             . str_replace('.', '/', $partialPath) . '.php';
@@ -53,6 +56,7 @@ public function getTemplateData($partialPath, array $data = []): bool|string
             return '';
         }
 
+        $content = '';
         ob_start();
         try {
             extract($data, EXTR_SKIP);
diff --git a/src/Interfaces/EventInterface.php b/src/Interfaces/EventInterface.php
index 846a260..a2de979 100644
--- a/src/Interfaces/EventInterface.php
+++ b/src/Interfaces/EventInterface.php
@@ -2,6 +2,7 @@
 
 namespace LbilTech\TelegramGitNotifier\Interfaces;
 
+use LbilTech\TelegramGitNotifier\Constants\EventConstant;
 use LbilTech\TelegramGitNotifier\Trait\ActionEventTrait;
 use Symfony\Component\HttpFoundation\Request;
 
@@ -10,23 +11,23 @@ interface EventInterface
     /**
      * Get action name of event from payload data
      *
-     * @param $payload
+     * @param object $payload
      *
      * @return string
      * @see ActionEventTrait::getActionOfEvent()
      */
-    public function getActionOfEvent($payload): string;
+    public function getActionOfEvent(object $payload): string;
 
     /**
      * Set platform and platform file for event
      *
-     * @param string $platform
+     * @param string|null $platform
      * @param string|null $platformFile
      *
      * @return void
      * @see EventTrait::setPlatFormForEvent()
      */
-    public function setPlatFormForEvent(string $platform, string $platformFile = null): void;
+    public function setPlatFormForEvent(?string $platform = EventConstant::DEFAULT_PLATFORM, string $platformFile = null): void;
 
     /**
      * Set event config and get event name
diff --git a/src/Interfaces/SettingInterface.php b/src/Interfaces/SettingInterface.php
index c08a6f7..b5833ae 100644
--- a/src/Interfaces/SettingInterface.php
+++ b/src/Interfaces/SettingInterface.php
@@ -38,12 +38,12 @@ public function getCallbackData(string $event, string $platform, array|bool $val
      * Get event name for markup
      *
      * @param string $event
-     * @param $value
+     * @param bool|array $value
      *
      * @return string
      * @see EventSettingTrait::getEventName()
      */
-    public function getEventName(string $event, $value): string;
+    public function getEventName(string $event, bool|array $value): string;
 
     /**
      * Get end keyboard buttons
diff --git a/src/Interfaces/Structures/AppInterface.php b/src/Interfaces/Structures/AppInterface.php
index 9395f2e..2bc4867 100644
--- a/src/Interfaces/Structures/AppInterface.php
+++ b/src/Interfaces/Structures/AppInterface.php
@@ -10,17 +10,14 @@ interface AppInterface
     /**
      * Send a message to telegram
      *
-     * @param string $message
+     * @param string|null $message
      * @param array $options
      *
      * @return void
      * @throws MessageIsEmptyException
      * @see App::sendMessage()
      */
-    public function sendMessage(
-        string $message = '',
-        array $options = []
-    ): void;
+    public function sendMessage(?string $message = '', array $options = []): void;
 
     /**
      * Send a photo to telegram
@@ -54,10 +51,7 @@ public function answerCallbackQuery(string $text = null): void;
      * @return void
      * @see App::editMessageText()
      */
-    public function editMessageText(
-        ?string $text = null,
-        array $options = []
-    ): void;
+    public function editMessageText(string $text = null, array $options = []): void;
 
     /**
      * Edit message reply markup from a telegram
diff --git a/src/Interfaces/Structures/NotificationInterface.php b/src/Interfaces/Structures/NotificationInterface.php
index 863f01f..1e65546 100644
--- a/src/Interfaces/Structures/NotificationInterface.php
+++ b/src/Interfaces/Structures/NotificationInterface.php
@@ -50,12 +50,12 @@ public function sendNotify(string $message = null, array $options = []): bool;
     /**
      * Get action name of event from payload data
      *
-     * @param $payload
+     * @param object $payload
      *
      * @return string
      * @see EventTrait::getActionOfEvent()
      */
-    public function getActionOfEvent($payload): string;
+    public function getActionOfEvent(object $payload): string;
 
     /**
      * Convert chat and thread ids to array
diff --git a/src/Models/Event.php b/src/Models/Event.php
index a6a8287..d3a12b2 100644
--- a/src/Models/Event.php
+++ b/src/Models/Event.php
@@ -41,17 +41,20 @@ public function getEventConfig(): array
     /**
      * Set event config
      *
-     * @param string $platform
+     * @param string|null $platform
      *
      * @return void
      */
     public function setEventConfig(
-        string $platform = EventConstant::DEFAULT_PLATFORM
+        string $platform = null
     ): void {
-        $this->platform = $platform;
+        $this->platform = $platform ?? EventConstant::DEFAULT_PLATFORM;
 
         $json = file_get_contents($this->platformFile);
-        $this->eventConfig = json_decode($json, true);
+
+        if (!empty($json)) {
+            $this->eventConfig = json_decode($json, true);
+        }
     }
 
     /**
diff --git a/src/Models/Setting.php b/src/Models/Setting.php
index 6c07913..f7b6d8c 100644
--- a/src/Models/Setting.php
+++ b/src/Models/Setting.php
@@ -44,7 +44,10 @@ public function getSettingFile(): string
     public function setSettingConfig(): void
     {
         $json = file_get_contents($this->settingFile);
-        $this->settings = json_decode($json, true);
+
+        if (!empty($json)) {
+            $this->settings = json_decode($json, true);
+        }
     }
 
     /**
@@ -81,13 +84,13 @@ public function isNotified(): bool
      * Update setting item value and save to file
      *
      * @param string $settingName
-     * @param $settingValue
+     * @param array|string|bool|int|null $settingValue
      *
      * @return bool
      */
     public function updateSetting(
         string $settingName,
-        $settingValue = null
+        mixed $settingValue = null
     ): bool {
         $settingKeys = explode('.', $settingName);
         $lastKey = array_pop($settingKeys);
diff --git a/src/Objects/Validator.php b/src/Objects/Validator.php
index 944529d..6c2b4b8 100644
--- a/src/Objects/Validator.php
+++ b/src/Objects/Validator.php
@@ -25,14 +25,14 @@ public function __construct(Setting $setting, Event $event)
      *
      * @param string $platform Source code platform (GitHub, GitLab)
      * @param string $event Event name (push, pull_request)
-     * @param $payload
+     * @param object $payload
      *
      * @return bool
      */
     public function isAccessEvent(
         string $platform,
         string $event,
-        $payload
+        object $payload
     ): bool {
         if (!$this->setting->isNotified()) {
             return false;
diff --git a/src/Structures/App.php b/src/Structures/App.php
index 907df5d..f3465d3 100644
--- a/src/Structures/App.php
+++ b/src/Structures/App.php
@@ -27,7 +27,7 @@ private function createTelegramBaseContent(): array
         ];
     }
 
-    public function sendMessage(string $message = '', array $options = []): void
+    public function sendMessage(?string $message = '', array $options = []): void
     {
         if (empty($message)) {
             throw MessageIsEmptyException::create();
diff --git a/src/Structures/Notification.php b/src/Structures/Notification.php
index cfdbef3..9426436 100644
--- a/src/Structures/Notification.php
+++ b/src/Structures/Notification.php
@@ -4,12 +4,13 @@
 
 use GuzzleHttp\Exception\GuzzleException;
 use LbilTech\TelegramGitNotifier\Constants\EventConstant;
+use LbilTech\TelegramGitNotifier\Exceptions\MessageIsEmptyException;
 use LbilTech\TelegramGitNotifier\Exceptions\SendNotificationException;
 use Symfony\Component\HttpFoundation\Request;
 
 trait Notification
 {
-    public mixed $payload;
+    public object $payload;
 
     public string $message = '';
 
@@ -30,11 +31,18 @@ public function accessDenied(
 
     public function setPayload(Request $request, string $event)
     {
+        $content = null;
+
         if ($this->event->platform === 'gitlab') {
-            $this->payload = json_decode($request->getContent());
+            $content = $request->getContent();
         } elseif ($this->event->platform === EventConstant::DEFAULT_PLATFORM) {
-            $this->payload = json_decode($request->request->get('payload'));
+            $content = $request->request->get('payload');
+        }
+
+        if (is_string($content)) {
+            $this->payload = json_decode($content);
         }
+
         $this->setMessage($event);
 
         return $this->payload;
@@ -46,6 +54,7 @@ public function setPayload(Request $request, string $event)
      * @param string $typeEvent
      *
      * @return void
+     * @throws MessageIsEmptyException
      */
     private function setMessage(string $typeEvent): void
     {
@@ -56,10 +65,16 @@ private function setMessage(string $typeEvent): void
             ? "events.{$this->event->platform}.{$event}.default"
             : "events.{$this->event->platform}.{$event}.{$action}";
 
-        $this->message = view($viewTemplate, [
+        $viewResult = view($viewTemplate, [
             'payload' => $this->payload,
             'event'   => tgn_convert_event_name($typeEvent),
         ]);
+
+        if ($viewResult === null) {
+            throw MessageIsEmptyException::create();
+        }
+
+        $this->message = $viewResult;
     }
 
     public function sendNotify(string $message = null, array $options = []): bool
diff --git a/src/Trait/ActionEventTrait.php b/src/Trait/ActionEventTrait.php
index 7c05b68..5161e0a 100644
--- a/src/Trait/ActionEventTrait.php
+++ b/src/Trait/ActionEventTrait.php
@@ -4,11 +4,11 @@
 
 trait ActionEventTrait
 {
-    public function getActionOfEvent($payload): string
+    public function getActionOfEvent(object $payload): string
     {
-        $action = $payload?->action
-            ?? $payload?->object_attributes?->action
-            ?? $payload?->object_attributes?->noteable_type
+        $action = $payload->action
+            ?? $payload->object_attributes?->action
+            ?? $payload->object_attributes?->noteable_type
             ?? '';
 
         if (!empty($action)) {
diff --git a/src/Trait/EventSettingTrait.php b/src/Trait/EventSettingTrait.php
index 87c1532..51f98ad 100644
--- a/src/Trait/EventSettingTrait.php
+++ b/src/Trait/EventSettingTrait.php
@@ -65,7 +65,7 @@ public function getCallbackData(
         return $prefix . $event . EventConstant::EVENT_UPDATE_SEPARATOR;
     }
 
-    public function getEventName(string $event, $value): string
+    public function getEventName(string $event, bool|array $value = false): string
     {
         if (is_array($value)) {
             return '⚙ ' . $event;
@@ -124,9 +124,9 @@ public function getPlatformFromCallback(
             return $platform;
         }
 
-        if (str_contains($callback, EventConstant::GITHUB_EVENT_SEPARATOR)) {
+        if ($callback && str_contains($callback, EventConstant::GITHUB_EVENT_SEPARATOR)) {
             return 'github';
-        } elseif (str_contains($callback, EventConstant::GITLAB_EVENT_SEPARATOR)) {
+        } elseif ($callback && str_contains($callback, EventConstant::GITLAB_EVENT_SEPARATOR)) {
             return 'gitlab';
         }
 
@@ -157,6 +157,10 @@ public function sendSettingEventMessage(
 
     public function getEventFromCallback(?string $callback): string
     {
+        if (!$callback) {
+            return '';
+        }
+
         return str_replace([
             EventConstant::EVENT_PREFIX,
             EventConstant::GITHUB_EVENT_SEPARATOR,
diff --git a/src/Trait/EventTrait.php b/src/Trait/EventTrait.php
index 98ec7d9..2175b0d 100644
--- a/src/Trait/EventTrait.php
+++ b/src/Trait/EventTrait.php
@@ -9,9 +9,9 @@ trait EventTrait
 {
     use ActionEventTrait;
 
-    public function setPlatFormForEvent(string $platform, string $platformFile = null): void
+    public function setPlatFormForEvent(?string $platform = EventConstant::DEFAULT_PLATFORM, string $platformFile = null): void
     {
-        /** @var array $platformFileDefaults */
+        /** @var array $platformFileDefaults<platform, platformFile> */
         $platformFileDefaults = config('telegram-git-notifier.data_file.platform');
         $this->event->setPlatformFile($platformFile ?? $platformFileDefaults[$platform]);
         $this->event->setEventConfig($platform);