fix type error

Author: cjodo

lua/convert/converters.lua

@@ -177,7 +177,8 @@ converters['in'] = {
 }
 
 local function hex_to_rgb(val)
-	local hex = val:gsub("#", "")
+	local str = tostring(val)
+	local hex = str:gsub("#", "")
 
 	if #hex == 3 then
 		local r = tonumber(hex:sub(1, 1) .. hex:sub(1, 1), 16)

lua/convert/ui/open_popup.lua

@@ -105,7 +105,7 @@ M.open_win = function(found_units)
 			for i = #found_units, 1, -1 do
 				local match = found_units[i]
 				if match.unit == from_unit then
-					local converted = calculator.convert(from_unit, to_unit, match.val)
+					local converted = calculator.convert(from_unit, to_unit, tonumber(match.val))
 					vim.api.nvim_buf_set_text(
 						bufnr,
 						match.pos.row - 1,