WARNING conflicting keymap exists for mode **"n"**, lhs: **",f"**

[nbari]

After running: :checkhealth which-key, I get this warning:

which-key: require("which-key.health").check()

WhichKey: checking conflicting keymaps ~
- WARNING conflicting keymap exists for mode **"n"**, lhs: **",f"**
- rhs: ` `

the output of map ,f returns:

n  ,ff         * <Lua 22: ~/.config/nvim/lua/user/plugins/conform.lua:9>
x  ,           * <Cmd>lua require("which-key").show(",", {mode = "v", auto = true})<CR>
n  ,           * <Cmd>lua require("which-key").show(",", {mode = "n", auto = true})<CR>
n  ,f          * <Lua 59: ~/.local/share/nvim/lazy/telescope.nvim/lua/telescope/builtin/init.lua:500>

In telescope I use the keymap:

local builtin = require("telescope.builtin")
vim.keymap.set("n", "<leader>f", builtin.find_files, {})

The keymap works and shows telescope find_files but wondering why I keep getting the warning, if I remove the keymap the warning is not shown anymore but also no keymap listed in the output of map ,f

n  ,ff         * <Lua 22: ~/.config/nvim/lua/user/plugins/conform.lua:9>
n  ,fÞ         * <Nop>
n  ,           * <Cmd>lua require("which-key").show(",", {mode = "n", auto = true})<CR>
x  ,           * <Cmd>lua require("which-key").show(",", {mode = "v", auto = true})<CR>

Instead I see now:

n  ,fÞ         * <Nop>

in /which-key/keys.lua I see:

-- secret character that will be used to create <nop> mappings
local secret = "Þ"

Any ideas?