Maybe a bug? I m not sure.

[vanguard-bit]

I didnt want to make a issue with my meager knowledge in lua and nvim.....

here is my config....and what i found out is while passing argument to border i tried using
[ "╔" , "═" , "╗" , "║" , "╝", "═" , "╚" , "║" ]

this is the error⬆️
then i tried this
'[ "╔" , "═" , "╗" , "║" , "╝", "═" , "╚" , "║" ]'

then i got this⬆️
I even tried passing each element as an array ...it didnt work...i tried without " ' " again the same error.

Is my syntax wrong in any way?
and all this are valid argument for border.

                 • If it is an array, it should have a length of eight or
                  any divisor of eight. The array will specifify the eight
                  chars building up the border in a clockwise fashion
                  starting with the top-left corner. As an example, the
                  double box style could be specified as [ "╔", "═" ,"╗",
                   "║", "╝", "═", "╚", "║" ]. If the number of chars are
                  less than eight, they will be repeated. Thus an ASCII
                  border could be specified as [ "/", "-", "\\", "|" ], or
                  all chars the same as [ "x" ]. An empty string can be
                  used to turn off a specific border, for instance, [ "",
                  "", "", ">", "", "", "", "<" ] will only make vertical
                  borders but not horizontal ones. By default,
                  `FloatBorder` highlight is used, which links to
                  `WinSeparator` when not defined. It could also be
                  specified by character: [ ["+", "MyCorner"], ["x",
                  "MyBorder"] ].

I didnt try other arguments though....
edit: I forgot to mention -single, double, rounded, shadow, and solid works fine.

[folke]

Lua uses curly brackets for lists. Try:

border = { "╔" ,  "═"  , "╗" ,  "║" ,  "╝", "═" ,  "╚" , "║"  }

[vanguard-bit]

Thanks that worked!