GuzzleHttp\Exception\ClientException: Client error: GET http://localhost/nextcloud/apps/richdocumentscode/proxy.php?req=/hosting/capabilities
resulted in a 404 Not Found
response: <head (truncated…)
/var/www/html/nextcloud/3rdparty/guzzlehttp/guzzle/src/Middleware.php - line 69:
GuzzleHttp\Exception\RequestException::create("*** sensiti ... *")
/var/www/html/nextcloud/3rdparty/guzzlehttp/promises/src/Promise.php - line 204:
GuzzleHttp\Middleware::GuzzleHttp\{closure}("*** sensiti ... *")
/var/www/html/nextcloud/3rdparty/guzzlehttp/promises/src/Promise.php - line 153:
GuzzleHttp\Promise\Promise::callHandler()
/var/www/html/nextcloud/3rdparty/guzzlehttp/promises/src/TaskQueue.php - line 48:
GuzzleHttp\Promise\Promise::GuzzleHttp\Promise\{closure}("*** sensiti ... *")
/var/www/html/nextcloud/3rdparty/guzzlehttp/promises/src/Promise.php - line 248:
GuzzleHttp\Promise\TaskQueue->run()
/var/www/html/nextcloud/3rdparty/guzzlehttp/promises/src/Promise.php - line 224:
GuzzleHttp\Promise\Promise->invokeWaitFn()
/var/www/html/nextcloud/3rdparty/guzzlehttp/promises/src/Promise.php - line 269:
GuzzleHttp\Promise\Promise->waitIfPending()
/var/www/html/nextcloud/3rdparty/guzzlehttp/promises/src/Promise.php - line 226:
GuzzleHttp\Promise\Promise->invokeWaitList()
/var/www/html/nextcloud/3rdparty/guzzlehttp/promises/src/Promise.php - line 62:
GuzzleHttp\Promise\Promise->waitIfPending()
/var/www/html/nextcloud/3rdparty/guzzlehttp/guzzle/src/Client.php - line 187:
GuzzleHttp\Promise\Promise->wait()
/var/www/html/nextcloud/lib/private/Http/Client/Client.php - line 226:
GuzzleHttp\Client->request()
/var/www/html/nextcloud/apps/richdocuments/lib/Service/CapabilitiesService.php - line 135:
OC\Http\Client\Client->get()
/var/www/html/nextcloud/apps/richdocuments/lib/AppInfo/Application.php - line 216:
OCA\Richdocuments\Service\CapabilitiesService->refetch()
/var/www/html/nextcloud/apps/richdocuments/lib/AppInfo/Application.php - line 148:
OCA\Richdocuments\AppInfo\Application->checkAndEnableCODEServer()
/var/www/html/nextcloud/lib/private/AppFramework/Bootstrap/Coordinator.php - line 200:
OCA\Richdocuments\AppInfo\Application->boot()
/var/www/html/nextcloud/lib/private/App/AppManager.php - line 437:
OC\AppFramework\Bootstrap\Coordinator->bootApp()
/var/www/html/nextcloud/lib/private/App/AppManager.php - line 216:
OC\App\AppManager->loadApp()
/var/www/html/nextcloud/lib/private/legacy/OC_App.php - line 126:
OC\App\AppManager->loadApps()
/var/www/html/nextcloud/cron.php - line 55:
OC_App::loadApps()
How to resolve this error?