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1/1 ContextErrorException in FrontController.php line 939: Warning: Cannot modify header information - headers already sent by (output started at /homepages/21/d356675642/htdocs/modules/claveib2b/controllers/front/display.php:1)

  1. in FrontController.php line 939
  2. at ErrorHandler->handleError('2', 'Cannot modify header information - headers already sent by (output started at /homepages/21/d356675642/htdocs/modules/claveib2b/controllers/front/display.php:1)', '/homepages/21/d356675642/htdocs/classes/controller/FrontController.php', '939', array())
  3. at header('P3P: CP="IDC DSP COR CURa ADMa OUR IND PHY ONL COM STA"') in FrontController.php line 939
  4. at FrontControllerCore->initHeader() in Controller.php line 249
  5. at ControllerCore->run() in Dispatcher.php line 428
  6. at DispatcherCore->dispatch() in index.php line 28