Don't show an error when attempting to stop the debugger when there i…

…s no active session to stop

modules/core/error.py

@@ -1,5 +1,7 @@
 from __future__ import annotations
 
 class Error(Exception):
-	def __init__(self, format: str):
-		super().__init__(format)
+	message = 'Unknown Error Occured'
+
+	def __init__(self, message: str|None = None):
+		super().__init__(message or self.message or 'Unknown Error Occured')

modules/dap/__init__.py

@@ -4,7 +4,10 @@
 	SourceLocation,
 )
 
-from .error import Error, Json
+from .error import (
+	Error,
+	NoActiveSessionError,
+)
 
 from .dap import (
 	StackFrame,

modules/dap/error.py

@@ -31,3 +31,5 @@ def from_message(message: dap.Message):
 		return Error(format, message.url, message.urlLabel)
 
 
+class NoActiveSessionError(core.Error):
+	message = 'No Active Debug Session'

modules/debugger.py

@@ -452,6 +452,7 @@ async def stop(self, session: dap.Session|None = None) -> None:
 
 			await session_stop
 
+		except dap.NoActiveSessionError: ...
 		except core.Error as e: self.console.error(f'Unable to stop: {e}')
 
 	@property
@@ -461,7 +462,7 @@ def is_active(self):
 	@property
 	def active(self):
 		if not self.session:
-			raise core.Error('No Active Debug Sessions')
+			raise dap.NoActiveSessionError()
 		return self.session
 
 	@active.setter