Clicking on "Next chapter" leads to invalid course value error message

[MissMad]

Hello, Quite a few students are experiencing trouble going through their course: when they click on "Next chapter" they get a blank page with an error message saying "Invalid course value. Please contact site administrator". I'm using WordPress 5.2.2 and I've manually updated WPLMS to the latest version just a few minutes ago and it doesn't change a thing. This is quite a problem as my students have to finish their course on Friday July 5th in order to get their mark for their school year. Please help.

[logan]

Hello, Please make sure themes/plugin are updated to the latest version which is 3.9.4. deactivate all third party and check if it solves your issue. also disable ajax load in unit from wp-admin >> lms >> settings. refer: http://prntscr.com/oae3yw

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in case the above does not work then:

1. share your admin url & credentials.
2. course url
3. unit in which issue occurs
4. user id / pass
5. FTP/SFTP if needed to check you codes.

[MissMad]

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[logan]

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[MissMad]

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[logan]

checking. yes, you have changed the name of the vibe course module. i have noticed.

[MissMad]

I did try a few things to fix the problem but it seems like it wasn't the good thing  to do.

[logan]

Hello, this has been fixed on your site. your cookie was not set in the course. so we have added a code manually by using FTP. also, we have deactivated your cache plugin. add_action('wplms_after_start_course',function(){   if(!empty($_POST['course_id'])){ echo ' <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery-cookie/1.4.1/jquery.cookie.min.js"></script> <script>   jQuery.cookie("course", '.$_POST['course_id'].', { expires: 1 }); </script> '; } });  

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