Not able to update the custom app in Freshservice

Hi Freshworks team,

Currently I am working on a Freshservice custom app that integrates Freshservice and Superops. The installation of the app completes without any issues. However, when I try to edit and save after installation, I am unable to update/save it.

The log I placed in postconfig is executed, but I am not sure why the changes are not being saved. I have attached an image for your reference. Eagerly waiting for your guidance. Thank you.