diff --git a/src/Helpers/ConfigHelper.php b/src/Helpers/ConfigHelper.php
index ee6e3cd..d345474 100644
--- a/src/Helpers/ConfigHelper.php
+++ b/src/Helpers/ConfigHelper.php
@@ -42,12 +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('.', '/', $partialPath) . '.php';
@@ -56,6 +56,7 @@ public function getTemplateData($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..df856ab 100644
--- a/src/Interfaces/EventInterface.php
+++ b/src/Interfaces/EventInterface.php
@@ -10,12 +10,12 @@ 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
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..6bab8f5 100644
--- a/src/Models/Event.php
+++ b/src/Models/Event.php
@@ -50,8 +50,10 @@ public function setEventConfig(
     ): void {
         $this->platform = $platform;
 
-        $json = file_get_contents($this->platformFile);
-        $this->eventConfig = json_decode($json, true);
+        if (file_exists($this->platformFile)) {
+            $json = file_get_contents($this->platformFile);
+            $this->eventConfig = json_decode($json, true);
+        }
     }
 
     /**
diff --git a/src/Models/Setting.php b/src/Models/Setting.php
index 6c07913..0f53e13 100644
--- a/src/Models/Setting.php
+++ b/src/Models/Setting.php
@@ -43,8 +43,10 @@ public function getSettingFile(): string
      */
     public function setSettingConfig(): void
     {
-        $json = file_get_contents($this->settingFile);
-        $this->settings = json_decode($json, true);
+        if (file_exists($this->settingFile)) {
+            $json = file_get_contents($this->settingFile);
+            $this->settings = json_decode($json, true);
+        }
     }
 
     /**
@@ -81,13 +83,13 @@ 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/Notification.php b/src/Structures/Notification.php
index cfdbef3..2a04d26 100644
--- a/src/Structures/Notification.php
+++ b/src/Structures/Notification.php
@@ -9,7 +9,7 @@
 
 trait Notification
 {
-    public mixed $payload;
+    public object $payload;
 
     public string $message = '';
 
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)) {