Security Group subpanel not showing in main modules

Hello Everyone,

Security Groups subpanel is not showing in main modules such as Accounts, the relationship and the subpanel are both appearing in studio, but not in the detail view of the account. When I checked my log I found this :

Bad subpanel definition, it has incorrect value for get_subpanel_data property securitygroups.

Do you have any explanation about this ?

I am using Sugar Version 6.5.24

Thank you !