Unable to log on KMC with the admin user

When I log with the admin user I get a screen with few links, no css loaded…
in kaltlog I have

9zC5TfjDsWge017-01-11 16:54:39 [0.000207] [10.0.2.2] [748371862] [24] [PS2] [sfView->initialize] INFO: {sfView} initialize view for "kmc/kmc1"
2017-01-11 16:54:39 [0.000297] [10.0.2.2] [748371862] [25] [PS2] [sfPHPView->renderFile] INFO: {sfView} render "/opt/kaltura/app/alpha/apps/kaltura/modules/kmc/templates/kmc1Success.php"
2017-01-11 16:54:39 [0.000364] [10.0.2.2] [748371862] [26] [PS2] [Partner->isInCDNWhiteList] DEBUG: Checking host [xxxx-streaming.xxxx.fr] is in partner CDN white list
--
==> /opt/kaltura/log/kaltura_apache_errors.log <==
[Wed Jan 11 16:54:39.646090 2017] [:error] [pid 3507] [client 10.20.1.32:36982] PHP Warning:  preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead in /opt/kaltura/app/vendor/symfony/controller/sfRouting.class.php on line 460, referer: http://xxxx-streaming.xxxx.fr/index.php/kmc/kmc
[Wed Jan 11 16:54:39.646216 2017] [:error] [pid 3507] [client 10.20.1.32:36982] PHP Warning:  preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead in /opt/kaltura/app/vendor/symfony/controller/sfRouting.class.php on line 460, referer: http://xxxx-streaming.xxxx.fr/index.php/kmc/kmc
[Wed Jan 11 16:54:39.646451 2017] [:error] [pid 3507] [client 10.20.1.32:36982] PHP Warning:  preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead in /opt/kaltura/app/vendor/symfony/controller/sfRouting.class.php on line 460, referer: http://xxxx-streaming.xxxx.fr/index.php/kmc/kmc
[Wed Jan 11 16:54:39.646504 2017] [:error] [pid 3507] [client 10.20.1.32:36982] PHP Notice:  Undefined offset: 0 in /opt/kaltura/app/alpha/apps/kaltura/modules/kmc/templates/kmc1Success.php on line 927, referer: http://xxxx-streaming.xxxx.fr/index.php/kmc/kmc
[Wed Jan 11 16:54:39.646582 2017] [:error] [pid 3507] [client 10.20.1.32:36982] PHP Fatal error:  Uncaught Error: Call to a member function getId() on null in /opt/kaltura/app/alpha/apps/kaltura/modules/kmc/templates/kmc1Success.php:927\nStack trace:\n#0 /opt/kaltura/app/cache/alpha/kaltura/prod/config/config_core_compile.yml.php(3188): require()\n#1 /opt/kaltura/app/cache/alpha/kaltura/prod/config/config_core_compile.yml.php(3263): sfPHPView->renderFile('/opt/kaltura/ap...')\n#2 /opt/kaltura/app/cache/alpha/kaltura/prod/config/config_core_compile.yml.php(945): sfPHPView->render()\n#3 /opt/kaltura/app/cache/alpha/kaltura/prod/config/config_core_compile.yml.php(1006): sfExecutionFilter->execute(Object(sfFilterChain))\n#4 /opt/kaltura/app/vendor/symfony/filter/sfFlashFilter.class.php(50): sfFilterChain->execute()\n#5 /opt/kaltura/app/cache/alpha/kaltura/prod/config/config_core_compile.yml.php(1006): sfFlashFilter->execute(Object(sfFilterChain))\n#6 /opt/kaltura/app/cache/alpha/kaltura/prod/config/config_core_compile.yml.php(830): sfFilterChain->execute()\n#7 /opt/kaltura/app/cache/alpha/kaltura/prod/config/config_co in /opt/kaltura/app/alpha/apps/kaltura/modules/kmc/templates/kmc1Success.php on line 927, referer: http://xxxx-streaming.xxxx.fr/index.php/kmc/kmc

Please see: White Page After login to the KMC
You shouldn’t use the Admin creds provided during the installation to log onto KMC but rather, log in to Admin Console and create a partner/publisher and use that to log in to KMC.

ok, thanks you for your help