Error while retrieving list of groups in VBCS

Summary:- When we edit or add new security roles below error occurs:-

Navigation - Application -> Settings -> User Roles

Error - [ERROR] Error while retrieving list of groups.

Content (please ensure you mask any confidential information): I have already created 22 user roles for my custom application. When i edit or add new role it gives error as mentioned above. I want to know why this error is occurred ? Is there any limit for adding user roles ? If yes, What is the minimum and maximum limit for user roles ?

Version (include the version you are using, if applicable): 2310.0.0

Code Snippet (add any code snippets that support your topic, if applicable):