use single ticks..

bitelab/__init__.py

@@ -686,7 +686,7 @@ async def root_test(board_prio: dict = Depends(board_priority),
     settings: config.Settings = Depends(get_settings)):
 	return { 'foo': 'bar', 'board': board_prio }
 
-@router.websocket("/ssh")
+@router.websocket('/ssh')
 async def board_exec_ws(
     websocket: WebSocket):
 	await websocket.accept()