Hello when I activated this widget I received the below veribage:
Starting March 2019, The Events Calendar will no longer support versions prior to PHP 5.6. Your site is currently using PHP version 5.5.38 which will no longer be supported by The Events Calendar. For best results, we recommend using PHP 5.6 or above.
How do I upgrade to what is required to use your widget?
Hi, Tan. We don’t provide support for upgrading your version of PHP because it’s something your web host would need to assist with — or you would need to switch hosts. Please reference https://wordpress.org/about/requirements/ for more information.