Fixing Yum Check-Update Failure on CentOS

Starting this morning I'm getting errors checking for updates to packages with yum on Centos 7.6. When I run:

$ sudo yum clean all && sudo yum check-update
Loaded plugins: fastestmirror, product-id, search-disabled-repos, subscription-manager
This system is not registered with an entitlement server. You can use subscription-manager to register.
Cleaning repos: base epel extras google-cloud-compute google-cloud-sdk updates
Cleaning up list of fastest mirrors
Other repos take up 1.5 M of disk space (use --verbose for details)
Loaded plugins: fastestmirror, product-id, search-disabled-repos, subscription-manager
This system is not registered with an entitlement server. You can use subscription-manager to register.
Determining fastest mirrors
epel/x86_64/metalink                                                         |  15 kB  00:00:00
 * base: mirror.cogentco.com
 * epel: mirror.steadfastnet.com
 * extras: mirror.cogentco.com
 * updates: mirror.cogentco.com
base                                                                         | 3.6 kB  00:00:00
epel                                                                         | 4.9 kB  00:00:00
extras                                                                       | 3.4 kB  00:00:00
google-cloud-compute/signature                                               |  454 B  00:00:00
google-cloud-compute/signature                                               | 1.8 kB  00:00:00 !!!
google-cloud-sdk/signature                                                   |  454 B  00:00:00
google-cloud-sdk/signature                                                   | 1.4 kB  00:00:00 !!!
updates                                                                      | 3.4 kB  00:00:00
(1/9): base/7/x86_64/group_gz                                                | 166 kB  00:00:00
(2/9): extras/7/x86_64/primary_db                                            | 200 kB  00:00:00
(3/9): epel/x86_64/group_gz                                                  |  88 kB  00:00:00
(4/9): base/7/x86_64/primary_db                                              | 6.0 MB  00:00:00
(5/9): epel/x86_64/primary_db                                                | 6.7 MB  00:00:00
(6/9): updates/7/x86_64/primary_db                                           | 5.0 MB  00:00:00
(7/9): google-cloud-compute/updateinfo                                       | 1.1 kB  00:00:00
(8/9): google-cloud-compute/primary                                          | 3.6 kB  00:00:00
(9/9): google-cloud-sdk/primary                                              | 100 kB  00:00:00
google-cloud-compute                                                                          10/10
google-cloud-sdk                                                                            705/705
Updateinfo file is not valid XML: <open file '/var/cache/yum/x86_64/7/epel/92f2e15cad66d79ea1ad327e2af7af89d98e4d153d7a3e27ff41946f476af5b4-updateinfo.xml.zck', mode 'rt' at 0x7f4a26819ed0>

So it looks like it doesn't like the EPEL updateinfo but… what can I do about that? How can I fix this?

I found this, but I don't understand how it might apply to me?

Edit: Apparently updates work, only check-update fails. Which is a nuisance because cron runs check-update hourly and my inbox explodes. But I can still run updates.

Edit 2: It appears maybe something is going wrong with EPEL at the moment and I have to adjust my cron jobs for now.