I am writing code in Android Studio to make a basic calculator as a part of my beginner's program. I want to add backspace icon into my application button. But when I try to do so, I get an error and the icon is not displayed on the button. I have attached screenshots of the problem and the part of code where I am facing the issue.
Also I noticed one thing that the Vector Asset I add doesn't have ic_ at it's beginning whereas other icons have ic_ at beginning of their name.
(https://i.stack.imgur.com/RLdjL.png) Complete Screen where I am facing issue
(https://i.stack.imgur.com/5SjLV.png) The error
(https://i.stack.imgur.com/pKdcT.png) Icon code
(https://i.stack.imgur.com/RWv8x.png) My 'Themes' code
I tried to solve the problem by going to C:\Users\....\svd\icons\material and deleted the icon_manifest.txt file as it was suggested in many of the answers but, it did not help.