Can't start: "ValueError: not sure how to interpret line"

Hi, phwmon doesn't start/show (at least on tint2 panel) I have this:

[user@arch ~]$ uname -a
Linux arch 4.19.1-arch1-1-ARCH #1 SMP PREEMPT Sun Nov 4 16:49:26 UTC 2018 x86_64 GNU/Linux
[user@arch ~]$ phwmon.py
Traceback (most recent call last):
  File "/usr/local/bin/phwmon.py", line 341, in <module>
    HardwareMonitor()
  File "/usr/local/bin/phwmon.py", line 128, in __init__
    self.initDiskIo()
  File "/usr/local/bin/phwmon.py", line 274, in initDiskIo
    v = psutil.disk_io_counters(perdisk=False)
  File "/usr/lib/python2.7/site-packages/psutil/__init__.py", line 2017, in disk_io_counters
    rawdict = _psplatform.disk_io_counters(**kwargs)
  File "/usr/lib/python2.7/site-packages/psutil/_pslinux.py", line 1117, in disk_io_counters
    for entry in gen:
  File "/usr/lib/python2.7/site-packages/psutil/_pslinux.py", line 1090, in read_procfs
    raise ValueError("not sure how to interpret line %r" % line)
ValueError: not sure how to interpret line '   8       0 sda 38522 1546 2132300 621981 103145 159724 11127688 1972242 0 376607 1867687 0 0 0 0\n'

That's it. What can I do?

Thanks!