Please do the following when updating
BACKUP YOUR SITE
Update your K2 to version 2.8 and test
Visit downloads.joomla.org/technical-requirements and check your system requirements.
In your Administrator go to Extensions/Manage/Update - update all your extensions you can and test each one before proceeding to the next
Set error reporting to Maximum in Global configuration and save
Use the Components/Update to update your site to 3.8
Test your site and your components
If you have errors try to disable the plugin or component that is causing the problem/ report it to the developer when you are sure that you have found culprit
This could save a lot of misery and time - especially the first and most important duty of a webmaster - Backup Your Site

Thanks for sharing the tutorial, Good health!

thx for sharing

Nice one William :)

hi william white,
I hope you are doing well.
I am the developer of my map locations and created this integration.
When we have tested the solution of k2 everywhere its working perfectly.
even we have over 1500 active customer using k2 with my map location and none of them reported this issue.
Can you please help me out the way so I can recreate the issue and try to solve it asap.

Thanks for your reply here and also in the ticket i created.
I have deleted the post that mentions your plugin here in the forum and will be in touch via the ticket i created as it seems that this issue may have been reported incorrectly ( or maby I could just have a combination of components and plugins that cause this)
I am glad to hear that there are no other complaints and will be in touch asap in your ticket system.