Uncaught ReferenceError: jQuery is not defined

Try disabling all the other plugins and switch to a default theme (e.g,. Twenty Twenty-Four) and see if this solves the problem. Then turn on one plugin at a time to see which one is causing the problem.

Ah thanks, I had disabled plugins but not the theme. My theme defers javascript loading. This line that gets added to the page’s HEAD section should check if jQuery is available before trying to execute it.

jQuery(function(jQuery){jQuery.datepicker.setDefaults({“closeText”:”Close”,”currentText”:”Today”,”monthNames”:[“January”,”February”,”March”,”April”,”May”,”June”,”July”,”August”,”September”,”October”,”November”,”December”],”monthNamesShort”:[“Jan”,”Feb”,”Mar”,”Apr”,”May”,”Jun”,”Jul”,”Aug”,”Sep”,”Oct”,”Nov”,”Dec”],”nextText”:”Next”,”prevText”:”Previous”,”dayNames”:[“Sunday”,”Monday”,”Tuesday”,”Wednesday”,”Thursday”,”Friday”,”Saturday”],”dayNamesShort”:[“Sun”,”Mon”,”Tue”,”Wed”,”Thu”,”Fri”,”Sat”],”dayNamesMin”:[“S”,”M”,”T”,”W”,”T”,”F”,”S”],”dateFormat”:”MM d, yy”,”firstDay”:0,”isRTL”:false});});

And why is this loading on every page and not just the Events Manager related pages?

Glad to hear you identified the source of the problem. I agree a check should be added and it would be better if it only loaded on Events Manager related pages. Hopefully the plugin author will read this and fix the problem.