Unapproved Caller Security Agent may only be invoked by Apple software ( After Update Catalina 10.15.6 )

Hi there vipin177,

We understand you're experiencing a "SecurityAgent may only be invoked by Apple software" error, and we'd like to see if we can assist.

To get started, we'd like to ask some questions to better understand the issue:

• You mention that you use Photoshop and Lightroom, do you receive this error without using these apps?
• If you only use one, does the error continue?

Also, try the steps below to further isolate the source of the issue:

• Test in safe mode: How to use safe mode on your Mac
• Test in a new user account: Set up users, guests, and groups on Mac

Cheers!