error undefind line 13

[Brayan120V]

I have a small problem, Cannot read property 'split' of undefind [0].split(":") line 13

fs.readFileSync("/proc/cpuinfo").toString() return the next

processor : 0
BogoMIPS : 38.40
Features : fp asimd evtstrm crc32 cpuild
CPU implementer : 0x41
CPU architecture : 8
CPU variant : 0x0
CPU part : 0xd03
CPU revision : 4

processor : 1
BogoMIPS : 38.40
Features : fp asimd evtstrm crc32 cpuild
CPU implementer : 0x41
CPU architecture : 8
CPU variant : 0x0
CPU part : 0xd03
CPU revision : 4

...

processor : 3
BogoMIPS : 38.40
Features : fp asimd evtstrm crc32 cpuild
CPU implementer : 0x41
CPU architecture : 8
CPU variant : 0x0
CPU part : 0xd03
CPU revision : 4

therefore the function filter leaves everything empty