I have not been able to run the mirror because every time I try to start it fails here is the log.

0 info it worked if it ends with ok
1 verbose cli [ '/usr/bin/nodejs', '/usr/bin/npm', 'start' ]
2 info using npm@3.10.10
3 info using node@v6.10.0
4 verbose run-script [ 'prestart', 'start', 'poststart' ]
5 info lifecycle magicmirror@2.1.0~prestart: magicmirror@2.1.0
6 silly lifecycle magicmirror@2.1.0~prestart: no script for prestart, continuing
7 info lifecycle magicmirror@2.1.0~start: magicmirror@2.1.0
8 verbose lifecycle magicmirror@2.1.0~start: unsafe-perm in lifecycle true
9 verbose lifecycle magicmirror@2.1.0~start: PATH: /usr/lib/node_modules/npm/bin/node-gyp-bin:/root/MagicMirror/node_modules/.bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
10 verbose lifecycle magicmirror@2.1.0~start: CWD: /root/MagicMirror
11 silly lifecycle magicmirror@2.1.0~start: Args: [ '-c', 'electron js/electron.js' ]
12 silly lifecycle magicmirror@2.1.0~start: Returned: code: 1  signal: null
13 info lifecycle magicmirror@2.1.0~start: Failed to exec start script
14 verbose stack Error: magicmirror@2.1.0 start: `electron js/electron.js`
14 verbose stack Exit status 1
14 verbose stack     at EventEmitter. (/usr/lib/node_modules/npm/lib/utils/lifecycle.js:255:16)
14 verbose stack     at emitTwo (events.js:106:13)
14 verbose stack     at EventEmitter.emit (events.js:191:7)
14 verbose stack     at ChildProcess. (/usr/lib/node_modules/npm/lib/utils/spawn.js:40:14)
14 verbose stack     at emitTwo (events.js:106:13)
14 verbose stack     at ChildProcess.emit (events.js:191:7)
14 verbose stack     at maybeClose (internal/child_process.js:877:16)
14 verbose stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:226:5)
15 verbose pkgid magicmirror@2.1.0
16 verbose cwd /root/MagicMirror
17 error Linux 4.4.34-v7+
18 error argv "/usr/bin/nodejs" "/usr/bin/npm" "start"
19 error node v6.10.0
20 error npm  v3.10.10
21 error code ELIFECYCLE
22 error magicmirror@2.1.0 start: `electron js/electron.js`
22 error Exit status 1
23 error Failed at the magicmirror@2.1.0 start script 'electron js/electron.js'.
23 error Make sure you have the latest version of node.js and npm installed.
23 error If you do, this is most likely a problem with the magicmirror package,
23 error not with npm itself.
23 error Tell the author that this fails on your system:
23 error     electron js/electron.js
23 error You can get information on how to open an issue for this project with:
23 error     npm bugs magicmirror
23 error Or if that isn't available, you can get their info via:
23 error     npm owner ls magicmirror
23 error There is likely additional logging output above.
24 verbose exit [ 1, true ]

after looking around on the forum I decided to try npm install which returns one line

npm WARN grunt-yamllint@0.2.0 requires a peer of grunt@~0.4.0 but none was installed.

I cannot make any sense of this and have tried updating electron and nodejs and i installed MM with the line on the home page I am using a rasperry pi 3 with the latest version of raspien non lite version.