Not able to update or delete the entity records

I have a application I login to web application using localhost:8080/app

i have a customer entity with firstname and lastname
I create a entry for this customer entity it works.
Now when I try to update this record it is not updating the record nor it is deleting this record from database.
I am using platform version 6.1.5, I tried migrating to higher version but still not working.
When i try updating the record it is not giving any error but it does not update the record in the table.
When I try to delete the record it shows error. Attached error log below


errorLog.txt (10.1K)

Hi Shanur,

Could you please update your application to the latest platform version and after that send us the new error log. Thank you.

Yup Sure… I will do it