ApiService is declared but its value is never read

This warning message is generated by the compiler when a variable is declared, but its value is never used or accessed in the code.

For instance, if the following code is written:

let ApiService = 'http://api.example.com';

And the variable ApiService is not used anywhere else in the code, then the warning message will be generated.

This warning message is not an error and does not affect the functionality of the code. However, it is considered good programming practice to remove any unused variables to improve the readability and maintainability of the code