diff --git a/src/libbot/__init__.py b/src/libbot/__init__.py
index 74b0290..ae01807 100644
--- a/src/libbot/__init__.py
+++ b/src/libbot/__init__.py
@@ -1,6 +1,6 @@
-__version__ = "3.0.1"
+__version__ = "3.1.0"
 __license__ = "GPL3"
 __author__ = "Profitroll"
 
-from . import i18n, pycord, pyrogram, sync
+from . import errors, i18n, pycord, pyrogram, sync
 from .__main__ import *
diff --git a/src/libbot/errors/__init__.py b/src/libbot/errors/__init__.py
new file mode 100644
index 0000000..1b0549f
--- /dev/null
+++ b/src/libbot/errors/__init__.py
@@ -0,0 +1 @@
+from .config import ConfigKeyError, ConfigValueError
diff --git a/src/libbot/errors/config.py b/src/libbot/errors/config.py
new file mode 100644
index 0000000..64f8a4c
--- /dev/null
+++ b/src/libbot/errors/config.py
@@ -0,0 +1,37 @@
+from typing import Any, List, Optional, Union
+
+
+class ConfigKeyError(Exception):
+    """Raised when config key is not found.
+
+    ### Attributes:
+        * key (`Union[str, List[str]]`): Missing config key.
+    """
+
+    def __init__(self, key: Union[str, List[str]]) -> None:
+        self.key: Union[str, List[str]] = key
+        super().__init__(
+            f"Config key {'.'.join(key) if isinstance(key, list) else key} is missing. Please set in your config file."
+        )
+
+    def __str__(self):
+        return f"Config key {'.'.join(self.key) if isinstance(self.key, list) else self.key} is missing. Please set in your config file."
+
+
+class ConfigValueError(Exception):
+    """Raised when config key's value is invalid.
+
+    ### Attributes:
+        * key (`Union[str, List[str]]`): Invalid config key.
+        * value (`Optional[Any]`): Key's correct value.
+    """
+
+    def __init__(self, key: Union[str, List[str]], value: Optional[Any] = None) -> None:
+        self.key: Union[str, List[str]] = key
+        self.value: Optional[Any] = value
+        super().__init__(
+            f"Config key {'.'.join(key) if isinstance(key, list) else key} has invalid value. {f'Must be {value}. ' if value else ''}Please set in your config file."
+        )
+
+    def __str__(self):
+        return f"Config key {'.'.join(self.key) if isinstance(self.key, list) else self.key} has invalid value. {f'Must be {self.value}. ' if self.value else ''}Please set in your config file."
diff --git a/src/libbot/pycord/classes/bot.py b/src/libbot/pycord/classes/bot.py
index e59dad5..d521532 100644
--- a/src/libbot/pycord/classes/bot.py
+++ b/src/libbot/pycord/classes/bot.py
@@ -1,6 +1,6 @@
 import logging
 from pathlib import Path
-from typing import Any, Dict, Union
+from typing import Any, Dict, List, Union
 
 try:
     from apscheduler.schedulers.asyncio import AsyncIOScheduler
@@ -29,6 +29,7 @@ class PycordBot(Bot):
         config_path: Union[str, Path] = Path("config.json"),
         locales_root: Union[str, Path, None] = None,
         scheduler: Union[AsyncIOScheduler, BackgroundScheduler, None] = None,
+        *args,
         **kwargs,
     ):
         if config is None:
@@ -38,17 +39,19 @@ class PycordBot(Bot):
             self.config = config
 
         super().__init__(
-            debug_guilds=self.config["bot"]["debug_guilds"],
-            owner_ids=self.config["bot"]["owners"],
+            *args,
             **kwargs,
         )
 
+        self.owner_ids: List[int] = self.config["bot"]["owners"]
+        self.debug_guilds: List[int] = self.config["bot"]["debug_guilds"]
+
         self.bot_locale: BotLocale = BotLocale(
             default_locale=self.config["locale"],
             locales_root=(Path("locale") if locales_root is None else locales_root),
         )
         self.default_locale: str = self.bot_locale.default
-        self.locales: dict = self.bot_locale.locales
+        self.locales: Dict[str, Any] = self.bot_locale.locales
 
         self._ = self.bot_locale._
         self.in_all_locales = self.bot_locale.in_all_locales