Error message
Deprecated function: urlencode(): Passing null to parameter #1 ($string) of type string is deprecated in CRM_Contact_Form_Task_Map::createMapXML() (line 132 of /var/www/html/vendor/civicrm/civicrm-core/CRM/Contact/Form/Task/Map.php).
CRM_Contact_Form_Task_Map::createMapXML() (Line: 36)
CRM_Contact_Form_Task_Map_Event->preProcess() (Line: 756)
CRM_Core_Form->buildForm() (Line: 76)
CRM_Core_QuickForm_Action_Display->perform() (Line: 203)
HTML_QuickForm_Controller->handle() (Line: 103)
HTML_QuickForm_Page->handle() (Line: 356)
CRM_Core_Controller->run() (Line: 98)
CRM_Utils_Wrapper->run() (Line: 243)
CRM_Core_Invoke::runItem() (Line: 73)
CRM_Core_Invoke::_invoke() (Line: 38)
CRM_Core_Invoke::invoke() (Line: 87)
Drupal\civicrm\Civicrm->invoke() (Line: 83)
Drupal\civicrm\Controller\CivicrmController->main()
call_user_func_array() (Line: 123)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 637)
Drupal\Core\Render\Renderer->executeInRenderContext() (Line: 121)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->wrapControllerExecutionInRenderContext() (Line: 97)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 181)
Symfony\Component\HttpKernel\HttpKernel->handleRaw() (Line: 76)
Symfony\Component\HttpKernel\HttpKernel->handle() (Line: 53)
Drupal\Core\StackMiddleware\Session->handle() (Line: 48)
Drupal\Core\StackMiddleware\KernelPreHandle->handle() (Line: 28)
Drupal\Core\StackMiddleware\ContentLength->handle() (Line: 32)
Drupal\big_pipe\StackMiddleware\ContentLength->handle() (Line: 116)
Drupal\page_cache\StackMiddleware\PageCache->pass() (Line: 90)
Drupal\page_cache\StackMiddleware\PageCache->handle() (Line: 48)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle() (Line: 51)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle() (Line: 36)
Drupal\Core\StackMiddleware\AjaxPageState->handle() (Line: 51)
Drupal\Core\StackMiddleware\StackedHttpKernel->handle() (Line: 741)
Drupal\Core\DrupalKernel->handle() (Line: 19)