I am using CiviCRM integrated with Drupal 7. Hosting is in pantheon server. I followed the CiviCRM document.
According to this, put the site in maintains mode. Deleted the old CiviCRM folder. Uploaded the new CiviCRM folder. Run the http://test-hgs-emun.pantheonsite.io/civicrm/upgrade?reset=1,
After some time, The application did not respond in time. error is coming
I thought some file is taking more time to execute. so contacted pantheon server support team. But Pantheon support team telling they don't increase the execution time more than 120 sec.
I am stuck in a middle please tell me what to do? to solve this.