Need help with a loot filter problem

So today i tried for the first time to download an online loot filter and its my first time ever trying a loot filter and when i tried to select it in the game it tells me this:

Failed to load Item Filter. Reason: Failed to open filter file: "▯鐵/My Games/Path of Exile2/OnlineFilters/LnlDQocB"

please i tried almost everything i can think of please help!!