HyperExpress: Uncaught Exception Occured

[timfemey]

I get an error when starting my server saying HyperExpress: Uncaught Exception Occured

Please can someone explain what causes this error and possible solutions

Thanks

[kartikk221]

Hi @timfemey can you provide the full error stack trace you see in your console when running your application?

[timfemey]

Hi @timfemey can you provide the full error stack trace you see in your console when running your application?

There is no error in the console and it just returns a response with status of 500 saying HyperExpress: Uncaught Exception Occured.

I also tried catching the error with
process.on('uncaughtException',err=>{ console.log(err) })
but no errors were sent as standard output on the console

[kartikk221]

@timfemey I see, that is occuring because you currently do not have an error handler bound to HyperExpress.
Bind an error handler with the below snippet:

webserver.set_error_handler((request, response, error) => {
    // Log the error
    console.log(error);

    // Send a response to the client
    response.status(500).send('Error Occured');
});

[timfemey]

I have added the error handler, i get this error

Error: HyperExpress: Double middleware execution detected! You have a bug where one of your middlewares is calling both the next() callback and also resolving from a Promise/async middleware. You must only use one of these not both.

[kartikk221]

Check all of your middlewares that you are using to see If you have a middleware that is async and you are calling the next() method.
For example, the following snippet would create a double middleware execution:

webserver.use(async (request, response, next) => {
    // You should not be calling "next()" in an async callback
    // async callback type middlewares are automatically awaited by HyperExpress 
    next();
});

[timfemey]

Thanks for the help, It works now 👍