Cannot access SearchApiQuery::$where in calendar_views_query_alter

I have a scenario, where I am using search_api_solr and calendar on the site. I have created view of type solr index. But for the view I am getting following error: Cannot access protected property Drupal\search_api\Plugin\views\query\SearchApiQuery::$where in calendar_views_query_alter() (line 273 of /Users/pratik/Sites/apf-field-portal/web/modules/contrib/calendar/calendar.module).