.js problems can't install ES 2.1.7

Hello,

after re-installing my website (ftp + sql)
i have uploaded to 2.1.6 this week-end... it was ok

Today, i was facing .js problems and i have tried to upgrade to ES 2.1.7 and i stay stuck on step 1...
something is going wrong with my website and .js files (can click to go to step 2)

i had error messages about .js version like : "site-2-1-6.min.js"
so i have decided to manually uploaded 2-1-7 version...
(i uploaded all files from /media/scripts/ folder from /com_easysocial_full_pro_2.1.7_joomla/setup/packages/com_easysocial_2.1.7_component_pro/media/scripts/ )

and now i have less error messages (see below) but still can't upgrade ES 2.1.7 :
https://screencast.com/t/ckuJvambT91


VARIOUS ERROR MESSAGES :
in admin :
https://screencast.com/t/ckuJvambT91

in dashboard :

JQMIGRATE: Migrate is installed, version 1.4.1        jquery-migrate.min.js:2:542



ReferenceError: Class is not defined        default.js:13:5

<anonyme> https://www.xxxx.com/media/kunena/js/default.js:13:5



function ()

Keepvid.Main.user.js:224:5

object, embed, video, iframe, a, undefined

Keepvid.Main.user.js:262:9



Échec du chargement pour l’élément <script> dont la source est « https://maps.googleapis.com/maps/api/js/AuthenticationService.Authenticate?1shttps%3A%2F%2Fwww.xxxx.com%2F&;callback=_xdc_._7flwmx&token=10264 ».

http://www.xxxx.com:1

In event or album page :

JQMIGRATE: Migrate is installed, version 1.4.1        jquery-migrate.min.js:2:542

function ()

Keepvid.Main.user.js:224:5

object, embed, video, iframe, a, undefined        Keepvid.Main.user.js:262:9

Google Maps API warning: NoApiKeys https://developers.google.com/maps/documentation/javascript/error-messages#no-api-keys        util.js:249:12

Hope you can help me
Thanks in advance
Loïc