How can we make the textarea a required field in the submit-question-form template?

At the moment, the plugin does not support required for the Textarea field in question submit form. If you want to have it, you need to custom the wp-content/plugins/dw-questions-answer-pro/inc/Handle.php file, find the line 446, and add the following code:

                    if ( empty( $_POST['question-content'] ) ) {
                        dwqa_add_notice( __( 'You must enter a valid question content.', 'dwqa' ), 'error' );
                        return false;
                    }