Creating error handlers
Flask also provides a mechanism for handling errors called error handlers. Error handlers are functions that are invoked when a specific error occurs in your application. These functions can be used to return custom error pages, log information about the error, or perform any other action that is appropriate for the error. To define an error handler in the Flask web application, you need to use the errorhandler decorator.
The decorator takes the error code as its argument, and the function that it decorates is the error handler that will be invoked when that error occurs. The error handler function takes an error object as its argument, which provides information about the error that occurred. This information can be used to provide a more detailed error response to the client or to log additional information about the error for debugging purposes.
In Flask backend and React frontend applications, error handling is a crucial step in ensuring a smooth user...