02. Last K Numbers Sequence

Здравейте,

Само аз ли имам проблем със следната задача:

https://judge.softuni.bg/Contests/Practice/Index/2752#1

решението ми е:

https://pastebin.com/Va1HaBPQ

което си работи локално, но джъдж дава следната еднотипна грешка:

C:\Windows\TEMP\ExecutionStrategies\uysva3uc.54v\tmp88B5.tmp:99
let adapterFunction = ([n, k], code) => code(Number(n), Number(k)).join('\n')
                                                                   ^

TypeError: code(...).join is not a function
    at adapterFunction (C:\Windows\TEMP\ExecutionStrategies\uysva3uc.54v\tmp88B5.tmp:99:68)
    at Socket.<anonymous> (C:\Windows\TEMP\ExecutionStrategies\uysva3uc.54v\tmp88B5.tmp:105:18)
    at Socket.emit (events.js:214:15)
    at endReadableNT (_stream_readable.js:1178:12)
    at processTicksAndRejections (internal/process/task_queues.js:80:21)

*когато подам като вход console.log пак е същото:

C:\Windows\TEMP\ExecutionStrategies\b2jv5not.qtr\tmpAEF1.tmp:81
let adapterFunction = ([n, k], code) => code(Number(n), Number(k)).join('\n')
                                                                  ^

TypeError: Cannot read property 'join' of undefined
    at adapterFunction (C:\Windows\TEMP\ExecutionStrategies\b2jv5not.qtr\tmpAEF1.tmp:81:67)
    at Socket.<anonymous> (C:\Windows\TEMP\ExecutionStrategies\b2jv5not.qtr\tmpAEF1.tmp:87:18)
    at Socket.emit (events.js:214:15)
    at endReadableNT (_stream_readable.js:1178:12)
    at processTicksAndRejections (internal/process/task_queues.js:80:21)

може би аз нещо бъркам?

П.С. В допълнение -- 06. Bigger Half

*когато подам като вход console.log пак е същото:

(като я реша локално ще кача и решението си) -- ето и решение ---

function biggerHalf(input) {
input.sort((a, b) => a - b);
let secondHalf = Math.ceil((input.length - 1) / 2);
let result = input.slice(secondHalf);
return `[${result.join(", ")}]`;
}

C:\Windows\TEMP\ExecutionStrategies\e5srndrm.x0x\tmp5A55.tmp:81
let adapterFunction = (i, c) => c(i.map(Number)).join('\n')
                                                ^

TypeError: Cannot read property 'join' of undefined
    at adapterFunction (C:\Windows\TEMP\ExecutionStrategies\e5srndrm.x0x\tmp5A55.tmp:81:49)
    at Socket.<anonymous> (C:\Windows\TEMP\ExecutionStrategies\e5srndrm.x0x\tmp5A55.tmp:87:18)
    at Socket.emit (events.js:214:15)
    at endReadableNT (_stream_readable.js:1178:12)
    at processTicksAndRejections (internal/process/task_queues.js:80:21)