Title: Undefined instructor Last modified: April 13, 2024 --- # Undefined instructor * Resolved [vaslegas](https://wordpress.org/support/users/vaslegas/) * (@vaslegas) * [2 years, 1 month ago](https://wordpress.org/support/topic/undefined-instructor/) * I have an issue with course page. I was trying to change the instructor for a course, and then I was deleting the instructor and choosed the option for transfer all courses to my admin account, but didn’t save them. I got the undefined instructor and when I go to course page I got the TypeError: Cannot read properties of null( reading ‘id’). * And, is there an option for certificate check to change Instructora neme from her/his username to her/his name and surname? Viewing 10 replies - 1 through 10 (of 10 total) * Plugin Author [masteriyo](https://wordpress.org/support/users/masteriyo/) * (@masteriyo) * [2 years, 1 month ago](https://wordpress.org/support/topic/undefined-instructor/#post-17686939) * Hi there, * We have tested the mentioned issue on our environment and replicated the issue. We will soon release the update, including the fix. We are unclear about your certification requirements. If you want to change the instructor’s display name, you will need to edit his profile from your Dashboard >> Users and change the name to suit your needs. * Regards! * Plugin Author [masteriyo](https://wordpress.org/support/users/masteriyo/) * (@masteriyo) * [2 years, 1 month ago](https://wordpress.org/support/topic/undefined-instructor/#post-17704532) * Please update the plugin and check whether the issue is resolved. * Thread Starter [vaslegas](https://wordpress.org/support/users/vaslegas/) * (@vaslegas) * [2 years, 1 month ago](https://wordpress.org/support/topic/undefined-instructor/#post-17706997) * Hello * No, it still doesn’t work. When I go to edit the course and click Settings I got the page working for 5 seconds, but instructor is not visible and then I get the same message. * Maybe you can try to add instructor name to quick edit? - This reply was modified 2 years, 1 month ago by [vaslegas](https://wordpress.org/support/users/vaslegas/). * Plugin Author [masteriyo](https://wordpress.org/support/users/masteriyo/) * (@masteriyo) * [2 years, 1 month ago](https://wordpress.org/support/topic/undefined-instructor/#post-17707309) * We recommend you go to your Dashboard >> Masteriyo >> Tools >> Utilities >> Clear the cache and see if it works. * Thread Starter [vaslegas](https://wordpress.org/support/users/vaslegas/) * (@vaslegas) * [2 years, 1 month ago](https://wordpress.org/support/topic/undefined-instructor/#post-17707393) * Unfortunately it’s not working * Plugin Support [Aashil Bijukshe](https://wordpress.org/support/users/lihsaa/) * (@lihsaa) * [2 years, 1 month ago](https://wordpress.org/support/topic/undefined-instructor/#post-17709235) * Hello [@vaslegas](https://wordpress.org/support/users/vaslegas/) , Seems like course doesn’t have any author assign to it after deletion, we will check this case from our side and let you know about it. Thanks * Thread Starter [vaslegas](https://wordpress.org/support/users/vaslegas/) * (@vaslegas) * [2 years, 1 month ago](https://wordpress.org/support/topic/undefined-instructor/#post-17709245) * Hello. * Yes, that is correct. I am thinking that maybe you can put admin as default instructor if instructor is deleted from course. * Thank you * Plugin Author [masteriyo](https://wordpress.org/support/users/masteriyo/) * (@masteriyo) * [2 years, 1 month ago](https://wordpress.org/support/topic/undefined-instructor/#post-17710041) * Please download the Masteriyo plugin zip file from [this link](https://encl.io/t/YEylkiLjir4#cJYfYsG93HboNYcgMtz_nQ) and replace the plugin on your site to fix the mentioned issue. If this does not help you fix your issue, please let us know. We will get back to you soon. * Thread Starter [vaslegas](https://wordpress.org/support/users/vaslegas/) * (@vaslegas) * [2 years, 1 month ago](https://wordpress.org/support/topic/undefined-instructor/#post-17717393) * Hello. I did it. I had to deactivate PRO licence, and on regular one I changed the instructors to someone else, and then I activated the PRO licence and change it again to my name. So it’s working. * Thank you * Plugin Author [masteriyo](https://wordpress.org/support/users/masteriyo/) * (@masteriyo) * [2 years, 1 month ago](https://wordpress.org/support/topic/undefined-instructor/#post-17720446) * Hi [@vaslegas](https://wordpress.org/support/users/vaslegas/), * I’m glad I could help. I hope you’ve been enjoying our product/service! We value your opinion and would appreciate it if you could take a few minutes to leave a review of your experience. Please click this link: [https://wordpress.org/support/plugin/learning-management-system/reviews/#new-post](https://wordpress.org/support/plugin/learning-management-system/reviews/#new-post), and share your thoughts about our support and the Masteriyo. * Your feedback helps us improve our product/service and lets others know what to expect when they choose us. I am looking forward to hearing your thoughts! Best Regards! Viewing 10 replies - 1 through 10 (of 10 total) The topic ‘Undefined instructor’ is closed to new replies. * ![](https://ps.w.org/learning-management-system/assets/icon-256x256.gif?rev=3520181) * [Masteriyo LMS – LMS Course Builder, Quizzes & Certificates](https://wordpress.org/plugins/learning-management-system/) * [Frequently Asked Questions](https://wordpress.org/plugins/learning-management-system/#faq) * [Support Threads](https://wordpress.org/support/plugin/learning-management-system/) * [Active Topics](https://wordpress.org/support/plugin/learning-management-system/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/learning-management-system/unresolved/) * [Reviews](https://wordpress.org/support/plugin/learning-management-system/reviews/) * 10 replies * 3 participants * Last reply from: [masteriyo](https://wordpress.org/support/users/masteriyo/) * Last activity: [2 years, 1 month ago](https://wordpress.org/support/topic/undefined-instructor/#post-17720446) * Status: resolved