Same thing just happened to me. I uninstalled and reinstalled the plugin. When I tried to activate I got this error:
Parse error: syntax error, unexpected T_CONSTANT_ENCAPSED_STRING in /home/content/81/11516981/html/wp-content/plugins/the-events-calendar/src/Tribe/Front_Page_View.php on line 93
My wordpress version is 4.9.5.