Frontend Course – Unit Save Button dont work

<span style="color: #212121; font-family: arial, sans-serif; white-space: pre-wrap;">Hello, Since the last update we have a small error in the front end course creation. More specifically, in point 4 create a curriculum. There is no way to save it after creating the content for the lesson. If you press the Save button, nothing happens. </span> <span style="color: #212121; font-family: arial, sans-serif; white-space: pre-wrap;">See:</span> <span style="color: #212121; font-family: arial, sans-serif; white-space: pre-wrap;"> </span>The Browser console reports: VM4728:24 Uncaught SyntaxError: Invalid or unexpected token at eval () at https://www.so-geht-bildung-heute.de/wp-includes/js/jquery/jquery.js,qver=1.12.4.pagespeed.jm.pPCPAKkkss.js:1:2651 at Function.globalEval (https://www.so-geht-bildung-heute.de/wp-includes/js/jquery/jquery.js,qver=1.12.4.pagespeed.jm.pPCPAKkkss.js:1:2662) at Ha (https://www.so-geht-bildung-heute.de/wp-includes/js/jquery/jquery.js,qver=1.12.4.pagespeed.jm.pPCPAKkkss.js:1:53272) at a.fn.init.append (https://www.so-geht-bildung-heute.de/wp-includes/js/jquery/jquery.js,qver=1.12.4.pagespeed.jm.pPCPAKkkss.js:1:54801) at a.fn.init.$.fn.(anonymous function) [as append] (https://www.so-geht-bildung-heute.de/wp-content/plugins/vibe-shortcodes/tinymce/js/jquery.livequery.js?ver=1.1.1:178:17) at Object.success (eval at (https://www.so-geht-bildung-heute.de/edit-course/?action=21633:1:1), :1:47498) at i (https://www.so-geht-bildung-heute.de/wp-includes/js/jquery/jquery.js,qver=1.12.4.pagespeed.jm.pPCPAKkkss.js:1:27449) at Object.fireWith [as resolveWith] (https://www.so-geht-bildung-heute.de/wp-includes/js/jquery/jquery.js,qver=1.12.4.pagespeed.jm.pPCPAKkkss.js:1:28213) at y (https://www.so-geht-bildung-heute.de/wp-includes/js/jquery/jquery.js,qver=1.12.4.pagespeed.jm.pPCPAKkkss.js:1:86808) (anonymous) @ jquery.js,qver=1.12.4.pagespeed.jm.pPCPAKkkss.js:1 globalEval @ jquery.js,qver=1.12.4.pagespeed.jm.pPCPAKkkss.js:1 Ha @ jquery.js,qver=1.12.4.pagespeed.jm.pPCPAKkkss.js:1 append @ jquery.js,qver=1.12.4.pagespeed.jm.pPCPAKkkss.js:1 $.fn.(anonymous function) @ jquery.livequery.js?ver=1.1.1:178 success @ VM4574:1 i @ jquery.js,qver=1.12.4.pagespeed.jm.pPCPAKkkss.js:1 fireWith @ jquery.js,qver=1.12.4.pagespeed.jm.pPCPAKkkss.js:1 y @ jquery.js,qver=1.12.4.pagespeed.jm.pPCPAKkkss.js:1 c @ jquery.js,qver=1.12.4.pagespeed.jm.pPCPAKkkss.js:1 The error only display in section, edit the unit. No Ajax is working there. Any Idea? Thanks a lot