permission error when monitoring 'copy' on snap package

[sidahmed-malaoui]

This command act -o copy -a nothing --verbose is giving the following error (when act is installed as a snap)

Traceback (most recent call last):
File "/snap/act/1/bin/act", line 11, in
load_entry_point('act==0.3', 'console_scripts', 'act')()
File "/snap/act/1/lib/python3.5/site-packages/act.py", line 125, in main
copy(args.time, args.verbose)
File "/snap/act/1/lib/python3.5/site-packages/act.py", line 23, in copy
bytes_read = psutil.disk_io_counters().read_bytes / (1024*1024)
File "/snap/act/1/lib/python3.5/site-packages/psutil/init.py", line 2051, in disk_io_counters
rawdict = _psplatform.disk_io_counters()
File "/snap/act/1/lib/python3.5/site-packages/psutil/_pslinux.py", line 1015, in disk_io_counters
partitions = get_partitions()
File "/snap/act/1/lib/python3.5/site-packages/psutil/_pslinux.py", line 997, in get_partitions
with open_text("%s/partitions" % get_procfs_path()) as f:
File "/snap/act/1/lib/python3.5/site-packages/psutil/_pslinux.py", line 204, in open_text
return open(fname, "rt", **kwargs)
PermissionError: [Errno 13] Permission denied: '/proc/partitions'

And the script can't run as root.