# Cannot GET error handler
**URL:** https://discourse.nodered.org/t/cannot-get-error-handler/53106
**Category:** General
**Created:** [2 November 2021 00:10 UTC](https://discourse.nodered.org/t/cannot-get-error-handler/53106 "2021-11-02T00:10:48Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@RootShell-coder](https://discourse.nodered.org/u/RootShell-coder)
#### Post date: [2 November 2021 00:10 UTC](https://discourse.nodered.org/t/cannot-get-error-handler/53106/1 "2021-11-02T00:10:48Z")
I want to customize my error handler (Cannot GET / error 404). How can i do this?
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### Author:  [@Colin](https://discourse.nodered.org/u/Colin)
#### Post date: [2 November 2021 09:52 UTC](https://discourse.nodered.org/t/cannot-get-error-handler/53106/2 "2021-11-02T09:52:02Z")
In what context is this? Exactly what are you doing that may cause a 404 error?
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### Author:  [@knolleary](https://discourse.nodered.org/u/knolleary)
#### Post date: [2 November 2021 10:11 UTC](https://discourse.nodered.org/t/cannot-get-error-handler/53106/3 "2021-11-02T10:11:51Z")
I assume, but may be wrong, the question is whether you can create a flow that will serve a custom 404 page if nothing else matches the requested URL - rather than get back the default `Cannot GET /some-random-url` message.
The short answer is that no, we don't provide a way to do that reliably.
You _could_ create an HTTP In node with a path of `*`. That will match any request that _has not been matched **yet** _. In other words, if that is the _last_ HTTP In node to register itself, it will act as a catch-all route.
The problem will come if you add another HTTP In node after it for a route you do want to handle - it will be added _after_ the catch all, so requests won't reach it. You'd also get into difficulty if you use the 'modified-flows/nodes' types of deploys at that will stop/restart individual nodes and cause the route handling to be reordered.
I can't immediately think of an easy way to work around that.
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### Author:  [@RootShell-coder](https://discourse.nodered.org/u/RootShell-coder)
#### Post date: [2 November 2021 12:46 UTC](https://discourse.nodered.org/t/cannot-get-error-handler/53106/4 "2021-11-02T12:46:06Z")
I was hoping that in settings.js, since inside express, you can add something like this...
```auto
app.use(function(err, req, res, next) {
res.status(err.status || 500);
res.render('error', {
message: err.message,
error: {}
});
});
```
and use this as the last route.
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### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [1 January 2022 12:46 UTC](https://discourse.nodered.org/t/cannot-get-error-handler/53106/5 "2022-01-01T12:46:39Z")
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