diff --git a/src/Interfaces/EventInterface.php b/src/Interfaces/EventInterface.php
index df856ab..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;
 
@@ -20,13 +21,13 @@ 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/Models/Event.php b/src/Models/Event.php
index 6bab8f5..d3a12b2 100644
--- a/src/Models/Event.php
+++ b/src/Models/Event.php
@@ -41,17 +41,18 @@ 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;
 
-        if (file_exists($this->platformFile)) {
-            $json = file_get_contents($this->platformFile);
+        $json = file_get_contents($this->platformFile);
+
+        if (!empty($json)) {
             $this->eventConfig = json_decode($json, true);
         }
     }
diff --git a/src/Models/Setting.php b/src/Models/Setting.php
index 0f53e13..f7b6d8c 100644
--- a/src/Models/Setting.php
+++ b/src/Models/Setting.php
@@ -43,8 +43,9 @@ public function getSettingFile(): string
      */
     public function setSettingConfig(): void
     {
-        if (file_exists($this->settingFile)) {
-            $json = file_get_contents($this->settingFile);
+        $json = file_get_contents($this->settingFile);
+
+        if (!empty($json)) {
             $this->settings = json_decode($json, true);
         }
     }
diff --git a/src/Trait/EventSettingTrait.php b/src/Trait/EventSettingTrait.php
index 486d204..6f5d925 100644
--- a/src/Trait/EventSettingTrait.php
+++ b/src/Trait/EventSettingTrait.php
@@ -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';
         }
 
diff --git a/src/Trait/EventTrait.php b/src/Trait/EventTrait.php
index 9bd5ae5..2175b0d 100644
--- a/src/Trait/EventTrait.php
+++ b/src/Trait/EventTrait.php
@@ -9,7 +9,7 @@ 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<platform, platformFile> */
         $platformFileDefaults = config('telegram-git-notifier.data_file.platform');