Prevented a missing avatar from crashing the application

@@ -160,8 +160,16 @@ class User extends Model implements AuthenticatableContract, CanResetPasswordCon
      */
     public function getAvatar($size = 50)
     {
-        if ($this->image_id === 0 || $this->image_id === '0' || $this->image_id === null) return baseUrl('/user_avatar.png');
-        return baseUrl($this->avatar->getThumb($size, $size, false));
+        $default = baseUrl('/user_avatar.png');
+        $imageId = $this->image_id;
+        if ($imageId === 0 || $imageId === '0' || $imageId === null) return $default;
+
+        try {
+            $avatar = baseUrl($this->avatar->getThumb($size, $size, false));
+        } catch (\Exception $err) {
+            $avatar = $default;
+        }
+        return $avatar;
     }
 
     /**