Added errors and fixed pycord's bot

src/libbot/errors/__init__.py

@@ -0,0 +1 @@
+from .config import ConfigKeyError, ConfigValueError

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."