terminate called after throwing an instance of char const

The error message "terminate called after throwing an instance of 'char const*'" typically occurs when an exception is thrown and not caught by any try-catch block in your code.

When an exception is thrown and not caught, the program terminates and displays this error message. The message itself indicates that the thrown exception is of type 'char const*', which means it is a string literal or a character pointer.

To fix this issue, you need to catch the exception using a try-catch block and handle it appropriately. Here's an example:

try {
    // Code that may throw an exception
} catch (const char* errorMessage) {
    // Handle the exception
    std::cout << "Exception caught: " << errorMessage << std::endl;
}

In the catch block, you can handle the exception by printing an error message or performing any necessary actions. Replace the comment with the appropriate error-handling code for your specific situation.

Note that the actual exception being thrown could be coming from your own code or from a library you are using. Review the code where the exception occurs to determine the cause and handle it accordingly