# Troubleshooting

This is a list of common pitfalls on using Payum, and how to avoid them.

### RequestNotSupported exception is thrown.

The exception is thrown when a gateway is not able to find an action for given request. All actions' `supports` method returns false. There are several reasons for that:

TODO

***

### Supporting Payum

Payum is an MIT-licensed open source project with its ongoing development made possible entirely by the support of community and our customers. If you'd like to join them, please consider:

* [Become a sponsor](https://github.com/sponsors/Payum)