Sometimes we save a page we use a lot as a "favorite". And if you then experience an error that reads: "The strategy your link contains no longer exists". Well, that's actually a valid error message.
What happens is that you have saved a link in your browser that contains a link that refers to a strategy with a strategy ID inside:
e.g. https://makemystrategy.vercel.app/strategies/9a1d9135-17b3-43c8-9f5f-bc50ca14cea4, but you have deleted the current strategy and therefore it no longer exists.
The easiest way is to change the bookmark in your browser to the default link, which is: https://makemystrategy.vercel.app/