Fatal error: Uncaught Exception: output is not an object in....?

i am setting up my own forum for that i uploaded my database into host and after installation says this

Fatal error: Uncaught Exception: output is not an object in /storage/ssd4/309/9178309/public_html/admin/sources/base/ipsRegistry.php:1079 Stack trace: #0 /storage/ssd4/309/9178309/public_html/admin/sources/base/ipsRegistry.php(1177): ipsRegistry::getClass('output') #1 /storage/ssd4/309/9178309/public_html/admin/applications/core/modules_admin/applications/applications.php(2746): ipsRegistry->__get('output') #2 /storage/ssd4/309/9178309/public_html/admin/sources/base/ipsRegistry.php(3379): admin_core_applications_applications->applicationsRecache() #3 /storage/ssd4/309/9178309/public_html/admin/sources/base/ipsRegistry.php(2164): ips_CacheRegistry::rebuildCache('app_cache', 'global') #4 /storage/ssd4/309/9178309/public_html/admin/sources/base/ipsRegistry.php(591): ipsRegistry->checkCaches() #5 /storage/ssd4/309/9178309/public_html/admin/sources/base/ipsController.php(77): ipsRegistry::init() #6 /storage/ssd4/309/9178309/public_html/admin/sources/base/ipsController.php(64): ipsController->init() #7 /storage/ssd4/309/9178309 in /storage/ssd4/309/9178309/public_html/admin/sources/base/ipsRegistry.php on line 1079

can anyone help me to solve this