My current version is 1.3.16. If I install the latest version there is a conflict. If I then deactivate the plugin everything works fine. So the problem is in the plugin. Below is the text of the error that can be seen in the debugger:
Uncaught TypeError: e.indexOf is not a function
at S.fn.init.S.fn.load (jquery.min.js:2)
at waypoints.min.js:8
at waypoints.min.js:8
at waypoints.min.js:8
at waypoints.min.js:8
jquery.min.js:2 jQuery.Deferred exception: e(...).select2 is not a function TypeError: e(...).select2 is not a function
at HTMLDocument.<anonymous> (https://My site/wp-content/plugins/wp-user-avatar/assets/js/member-directory.min.js:1:1118)
at e (https://My site/wp-includes/js/jquery/jquery.min.js:2:30005)
at t (https://My site/wp-includes/js/jquery/jquery.min.js:2:30307) undefined
S.Deferred.exceptionHook @ jquery.min.js:2
jquery.min.js:2 Uncaught TypeError: e(...).select2 is not a function
at HTMLDocument.<anonymous> (member-directory.min.js:1)
at e (jquery.min.js:2)
at t (jquery.min.js:2)