format prefix works on other modules, not this one
i am trying to make every module have a border around it while the background of the bar itself is transparent to achieve a "floating" look for each module. i followed this discussion to have a border for the modules, and it has worked for the i3 module and the systray module, but not the memory module, since that module already has a format-prefix in it so i cant add the special character mentioned in that discussion. so what i thought of doing next was to create a custom/text module and have that character as the only thing in it and i have 0 module margin in my bar so this should work, except when i try to launch polybar it gives me this parser error. why does it work on i3 and systray modules but not my custom/text module?
this is my polybar config