Piwik\API\ResponseBuilder::getResponseException PHP Method

    public function getResponseException($e)
    {
        $e = $this->decorateExceptionWithDebugTrace($e);
        $message = $this->formatExceptionMessage($e);
        $this->sendHeaderIfEnabled();
        return $this->apiRenderer->renderException($message, $e);
    }

 /**
  * Records Global settings when user submit changes
  */
 public function setGlobalSettings()
 {
     $response = new ResponseBuilder(Common::getRequestVar('format'));
     try {
         $this->checkTokenInUrl();
         $timezone = Common::getRequestVar('timezone', false);
         $excludedIps = Common::getRequestVar('excludedIps', false);
         $excludedQueryParameters = Common::getRequestVar('excludedQueryParameters', false);
         $excludedUserAgents = Common::getRequestVar('excludedUserAgents', false);
         $currency = Common::getRequestVar('currency', false);
         $searchKeywordParameters = Common::getRequestVar('searchKeywordParameters', $default = "");
         $searchCategoryParameters = Common::getRequestVar('searchCategoryParameters', $default = "");
         $enableSiteUserAgentExclude = Common::getRequestVar('enableSiteUserAgentExclude', $default = 0);
         $keepURLFragments = Common::getRequestVar('keepURLFragments', $default = 0);
         $api = API::getInstance();
         $api->setDefaultTimezone($timezone);
         $api->setDefaultCurrency($currency);
         $api->setGlobalExcludedQueryParameters($excludedQueryParameters);
         $api->setGlobalExcludedIps($excludedIps);
         $api->setGlobalExcludedUserAgents($excludedUserAgents);
         $api->setGlobalSearchParameters($searchKeywordParameters, $searchCategoryParameters);
         $api->setSiteSpecificUserAgentExcludeEnabled($enableSiteUserAgentExclude == 1);
         $api->setKeepURLFragmentsGlobal($keepURLFragments);
         $toReturn = $response->getResponse();
     } catch (Exception $e) {
         $toReturn = $response->getResponseException($e);
     }
     return $toReturn;
 }