Module Prod not visible

[Eddy]

After update to the latest version of phraseanet I have the issue that
the Module Prod is not visible (error 500)
All other modules are working and visible if you type in (admin aso.)
Have a look at istock24.com
Any ideas whats wrong?
Thanks in advance
Eddy

[Eddy]

Here is the log file:
logs/app_error-2018-05-09.log

[2018-05-09 20:40:00] phraseanet.ERROR: An exception has been thrown

during the rendering of a template ("Invalid search engine type

"Alchemy\Phrasea\SearchEngine\Elastic\ElasticSearchEngine".").

{"code":0,"trace":[{"namespace":"","short_class":"","class":"","type":"","function":"","file":"/home/istock24.com/templates/web/admin/dashboard.html.twig","line":170,"args":[]},{"namespace":"","short_class":"Twig_Template","class":"Twig_Template","type":"->","function":"displayWithErrorHandling","file":"/home/istock24.com/vendor/twig/twig/lib/Twig/Template.php","line":403,"args":[["array",{"cache_flushed":["boolean",false],"admins":["array",[["object","Alchemy\\Phrasea\\Model\\Proxies\\__CG__\\Alchemy\\Phrasea\\Model\\Entities\\User"]]],"email_status":["null",null],"app":["object","Alchemy\\Phrasea\\Application"],"current_date":["object","DateTime"]}],["array",[]]]},{"namespace":"","short_class":"Twig_Template","class":"Twig_Template","type":"->","function":"display","file":"/home/istock24.com/vendor/twig/twig/lib/Twig/Template.php","line":411,"args":[["array",{"cache_flushed":["boolean",false],"admins":["array",[["object","Alchemy\\Phrasea\\Model\\Proxies\\__CG__\\Alchemy\\Phrasea\\Model\\Entities\\User"]]],"email_status":["null",null]}]]},{"namespace":"","short_class":"Twig_Template","class":"Twig_Template","type":"->","function":"render","file":"/home/istock24.com/vendor/twig/twig/lib/Twig/Environment.php","line":362,"args":[["array",{"cache_flushed":["boolean",false],"admins":["array",[["object","Alchemy\\Phrasea\\Model\\Proxies\\__CG__\\Alchemy\\Phrasea\\Model\\Entities\\User"]]],"email_status":["null",null]}]]},{"namespace":"","short_class":"Twig_Environment","class":"Twig_Environment","type":"->","function":"render","file":"/home/istock24.com/lib/Alchemy/Phrasea/Controller/Controller.php","line":61,"args":[["string","admin/dashboard.html.twig"],["array",{"cache_flushed":["boolean",false],"admins":["array",[["object","Alchemy\\Phrasea\\Model\\Proxies\\__CG__\\Alchemy\\Phrasea\\Model\\Entities\\User"]]],"email_status":["null",null]}]]},{"namespace":"Alchemy\\Phrasea\\Controller","short_class":"Controller","class":"Alchemy\\Phrasea\\Controller\\Controller","type":"->","function":"render","file":"/home/istock24.com/lib/Alchemy/Phrasea/Controller/Admin/DashboardController.php","line":53,"args":[["string","admin/dashboard.html.twig"],["array",{"cache_flushed":["boolean",false],"admins":["array",[["object","Alchemy\\Phrasea\\Model\\Proxies\\__CG__\\Alchemy\\Phrasea\\Model\\Entities\\User"]]],"email_status":["null",null]}]]},{"namespace":"Alchemy\\Phrasea\\Controller\\Admin","short_class":"DashboardController","class":"Alchemy\\Phrasea\\Controller\\Admin\\DashboardController","type":"->","function":"slash","file":null,"line":null,"args":[["object","Symfony\\Component\\HttpFoundation\\Request"]]},{"namespace":"","short_class":"","class":"","type":"","function":"call_user_func_array","file":"/home/istock24.com/vendor/symfony/symfony/src/Symfony/Component/HttpKernel/HttpKernel.php","line":144,"args":[["array",[["object","Alchemy\\Phrasea\\Controller\\Admin\\DashboardController"],["string","slash"]]],["array",[["object","Symfony\\Component\\HttpFoundation\\Request"]]]]},{"namespace":"Symfony\\Component\\HttpKernel","short_class":"HttpKernel","class":"Symfony\\Component\\HttpKernel\\HttpKernel","type":"->","function":"handleRaw","file":"/home/istock24.com/vendor/symfony/symfony/src/Symfony/Component/HttpKernel/HttpKernel.php","line":64,"args":[["object","Symfony\\Component\\HttpFoundation\\Request"],["string","1"]]},{"namespace":"Symfony\\Component\\HttpKernel","short_class":"HttpKernel","class":"Symfony\\Component\\HttpKernel\\HttpKernel","type":"->","function":"handle","file":"/home/istock24.com/vendor/silex/silex/src/Silex/Application.php","line":586,"args":[["object","Symfony\\Component\\HttpFoundation\\Request"],["string","1"],["boolean",true]]},{"namespace":"Silex","short_class":"Application","class":"Silex\\Application","type":"->","function":"handle","file":"/home/istock24.com/vendor/silex/silex/src/Silex/Application.php","line":563,"args":[["object","Symfony\\Component\\HttpFoundation\\Request"]]},{"namespace":"Silex","short_class":"Application","class":"Silex\\Application","type":"->","function":"run","file":"/home/istock24.com/www/index.php","line":23,"args":[]}]}

{"url":"/admin/dashboard/","ip":"77.220.124.112","http_method":"GET","server":"istock24.com","referrer":"https://istock24.com/admin/"}