Unable to download or enable Community Document Server

18.0.1 didn’t solve the problem, still couldn’t install the Community Document Server. However, i did try to install the app by manually uploading it. Still, when i tried to ‘Enable’ it, and ‘An error occured during the request. Unable to proceed.’ notice popped up again. At least a log appeared. Here it is:

Error index Exception: fclose() expects parameter 1 to be resource, null given

0. /home/xiom3155/public_html/cloud/lib/private/AppFramework/App.php - line 125:OC\AppFramework\Http\Dispatcher->dispatch(OCA\Settings ... {}, "enableApps")
1. /home/xiom3155/public_html/cloud/lib/private/AppFramework/Routing/RouteActionHandler.php - line 47:OC\AppFramework\App::main("OCA\\Settin ... r", "enableApps", OC\AppFramew ... {}, { _route: "s ... "})
2. <<closure>>OC\AppFramework\Routing\RouteActionHandler->__invoke({ _route: "s ... "})
3. /home/xiom3155/public_html/cloud/lib/private/Route/Router.php - line 299:call_user_func(OC\AppFramew ... {}, { _route: "s ... "})
4. /home/xiom3155/public_html/cloud/lib/base.php - line 1008:OC\Route\Router->match("/settings/apps/enable")
5. /home/xiom3155/public_html/cloud/index.php - line 38:OC::handleRequest()

Caused by TypeError: fclose() expects parameter 1 to be resource, null given

0. /home/xiom3155/public_html/cloud/apps/documentserver_community/lib/Document/FontManager.php - line 66:fclose(null)
1. /home/xiom3155/public_html/cloud/apps/documentserver_community/lib/LocalAppData.php - line 78:OCA\DocumentServer\Document\FontManager->OCA\DocumentServer\Document\{closure}("*** sensiti ... *")
2. /home/xiom3155/public_html/cloud/apps/documentserver_community/lib/Document/FontManager.php - line 72:OCA\DocumentServer\LocalAppData->getReadLocalPath(OC\Files\Sim ... {}, Closure {})
3. /home/xiom3155/public_html/cloud/apps/documentserver_community/lib/Migration/RebuildFonts.php - line 46:OCA\DocumentServer\Document\FontManager->rebuildFonts()
4. /home/xiom3155/public_html/cloud/lib/private/Repair.php - line 104:OCA\DocumentServer\Migration\RebuildFonts->run(OC\Repair {})
5. /home/xiom3155/public_html/cloud/lib/private/legacy/app.php - line 981:OC\Repair->run()
6. /home/xiom3155/public_html/cloud/lib/private/Installer.php - line 154:OC_App::executeRepairSteps("documentserver_community", { step: "OCA ... "})
7. /home/xiom3155/public_html/cloud/apps/settings/lib/Controller/AppSettingsController.php - line 443:OC\Installer->installApp("documentserver_community")
8. /home/xiom3155/public_html/cloud/lib/private/AppFramework/Http/Dispatcher.php - line 170:OCA\Settings\Controller\AppSettingsController->enableApps([ "documentserver_community"], [])
9. /home/xiom3155/public_html/cloud/lib/private/AppFramework/Http/Dispatcher.php - line 99:OC\AppFramework\Http\Dispatcher->executeController(OCA\Settings ... {}, "enableApps")
10. /home/xiom3155/public_html/cloud/lib/private/AppFramework/App.php - line 125:OC\AppFramework\Http\Dispatcher->dispatch(OCA\Settings ... {}, "enableApps")
11. /home/xiom3155/public_html/cloud/lib/private/AppFramework/Routing/RouteActionHandler.php - line 47:OC\AppFramework\App::main("OCA\\Settin ... r", "enableApps", OC\AppFramew ... {}, { _route: "s ... "})
12. <<closure>>OC\AppFramework\Routing\RouteActionHandler->__invoke({ _route: "s ... "})
13. /home/xiom3155/public_html/cloud/lib/private/Route/Router.php - line 299:call_user_func(OC\AppFramew ... {}, { _route: "s ... "})
14. /home/xiom3155/public_html/cloud/lib/base.php - line 1008:OC\Route\Router->match("/settings/apps/enable")
15. /home/xiom3155/public_html/cloud/index.php - line 38:OC::handleRequest() 2020-02-25T13:27:49+0700
Error PHP Undefined offset: 0 at /home/xiom3155/public_html/cloud/apps/documentserver_community/lib/Document/FontManager.php#66 2020-02-25T13:27:49+0700
Error PHP proc_open() has been disabled for security reasons at /home/xiom3155/public_html/cloud/apps/documentserver_community/lib/Document/FontManager.php#64 2020-02-25T13:27:49+0700