Is the distro server down?
I click here: Index of /ci/ubuntu/22.04/
And each of the images returns:
This XML file does not appear to have any style information associated with it. The document tree is shown below.
<Error>
<Code>SlowDown</Code>
<RequestId>tx000000cea29a00efd3725-00651eaf99-499073e8-default</RequestId>
<HostId>499073e8-default-default</HostId>
</Error>