its tow different tests i added 1's that will be easyier to see

for vKnightLeft = 1, vKnightRight = 1 and field:
["$->1111","1111
<-P"]
: expected [ '11$->11', '11<-P11' ] to deeply equal [ '1$->111', '111<-P1' ]

for vKnightLeft = 1, vKnightRight = 1 and field:
["$->11111","11111<-P"]
: expected [ '1$->1111', '1111<-P1' ] to deeply equal [ '11$->111', '111<-P11' ]
i dont understand why these tow exaples are different?

TypeError: Cannot read property 'sort' of undefined
and my solution runs good at vscode

how do i solve this ? expected '890625n' to equal 890625n