Since i updated magicmirror to the new version 2.1 i’ve nothing on screen and from local browser (ssh connected)

looking npm logs, i’ve this :

 node v7.6.0                                                                                  
30 error npm  v3.10.10                                                                                
31 error code ELIFECYCLE                                                                              
32 error magicmirror@2.1.0 start: `electron js/electron.js`                                           
32 error Exit status 1                                                                                
33 error Failed at the magicmirror@2.1.0 start script 'electron js/electron.js'.                      
33 error Make sure you have the latest version of node.js and npm installed.                          
33 error If you do, this is most likely a problem with the magicmirror package,                       
33 error not with npm itself.                                                                         
33 error Tell the author that this fails on your system:                                              
33 error     electron js/electron.js                                                                  
33 error You can get information on how to open an issue for this project with:                       
33 error     npm bugs magicmirror                                                                     
33 error Or if that isn't available, you can get their info via:                                      
33 error     npm owner ls magicmirror                                                                 
33 error There is likely additional logging output above.                                             
34 verbose exit [ 1, true ]         

i added ipwhitelist like this :
ipWhitelist: ["127.0.0.1", "::ffff:127.0.0.1", "::1", ["192.168.0.1", "192.168.0.100"]],

could i have some help to find an issue to my problem ?