impossible to export videos

i’ve spent 3 credit to export one video, but when i want to download it, i get the following error message. whats the problem?

This XML file does not appear to have any style information associated with it. The document tree is shown below.

<Error>

<Code>AccessDenied</Code>

<Message>Access Denied</Message>

<RequestId>E3P9RV1M5QEGSPH8</RequestId>

<HostId>xJG3g6gLNgOLMg6WFonNWM2/MqwHJwHxoCMeMIo7BocqHZEkSpfVh62Fu8AsTyMDbvMh02g8zj9aRfomX2v9WZ+0ggkQYfWQ</HostId>

</Error>