Intermediate Algorithm Scripting: Binary Agents

Having trouble passing the tests for this challenge. The output shows up correctly…but none of the tests are passing. Any pointers are appreciated.

function binaryAgent(str) {
  return
  str.split(" ")
      .map(function(val) {
        return String.fromCharCode(parseInt(val, 2))
      }).join('');

}

binaryAgent("01000001 01110010 01100101 01101110 00100111 01110100 00100000 01100010 01101111 01101110 01100110 01101001 01110010 01100101 01110011 00100000 01100110 01110101 01101110 00100001 00111111");