The player I am using is spotify.

When trying to execute the command playerctl metadata --format="{{duration(mpris:length)}} -p spotify", I'm getting this error:

Could not execute command: function position can only be called on int64 values

I also tried playerctl metadata --format={{duration(mpris:length - position)}} -p spotify and I'm getting this error

Could not execute command: Got unsuported operand types for -: 't' and 'x'