Ghost/core/server/errors/internal-server-error.js

// # Internal Server Error
// Custom error class with status code and type prefilled.

function InternalServerError(message) {
    this.message = message;
    this.stack = new Error().stack;
    this.code = 500;
    this.type = this.name;
}

InternalServerError.prototype = Object.create(Error.prototype);
InternalServerError.prototype.name = 'InternalServerError';

module.exports = InternalServerError;