@pinsdorf its on /home/pi/MagicMirror, I will reinstall , and after that i will report back and see if the problem comes back, thank you for the calendar too

@lavolp3 yes on this one i will reinstall to jessie, the error didnt appear after several days. thanks

Having this error, cant see were is the problem. some can help?
And how can i set the default calendar to mexico holidays?

webcal://www.calendarlabs.com/templates/ical/US-Holidays.ics

Thanks all

0 info it worked if it ends with ok
1 verbose cli [ '/usr/bin/node', '/usr/bin/npm', 'run', 'config:check' ]
2 info using npm@3.10.10
3 info using node@v6.13.0
4 verbose config Skipping project config: /home/pi/.npmrc. (matches userconfig)
5 verbose stack Error: ENOENT: no such file or directory, open '/home/pi/package.json'
5 verbose stack     at Error (native)
6 verbose cwd /home/pi
7 error Linux 4.9.59-v7+
8 error argv "/usr/bin/node" "/usr/bin/npm" "run" "config:check"
9 error node v6.13.0
10 error npm  v3.10.10
11 error path /home/pi/package.json
12 error code ENOENT
13 error errno -2
14 error syscall open
15 error enoent ENOENT: no such file or directory, open '/home/pi/package.json'
16 error enoent ENOENT: no such file or directory, open '/home/pi/package.json'
16 error enoent This is most likely not a problem with npm itself
16 error enoent and is related to npm not being able to find a file.
17 verbose exit [ -2, true ]