How to troubleshoot Save Grid View

I cannot get the Save Grid View ‘Save’ to save the changed columns in my production environment.
The checkbox is checked in ‘Save Grid’ option and works in dev.
Is there a permission in a table that needs to be changed.
Permissions on the folder do not appear to be the issue, dev versus prod are the same.

Thank you

Permissions on the folder do not appear to be the issue, dev versus prod are the same.

The problem was with the conf folder, it needs write permission.