Repair one error message in two bots

Need to correct below errors.  Thanks

Bot 1.  error

"Error CS0234: The type or namespace name 'Lib' does not exist in the namespace 'cAlgo' (are you missing an assembly reference?)"

Bot 2.  error 3 errors

"Error CS0234: The type or namespace name 'Lib' does not exist in the namespace 'cAlgo' (are you missing an assembly reference?)"

Error CS0246: The type or namespace name 'GlobalAverageTrueRange' could not be found (are you missing a using directive or an assembly reference?)

Error CS0246: The type or namespace name 'DirectionalMovementSystemRating' could not be found (are you missing a using directive or an assembly reference?)