Hi Bradley,
It seems that you have been affected by a known issue and currently the App Engine engineering team is working on a fix but there is no ETA at the moment. You can track of the progress of this issue’s resolution by following this link. Currently, there are two potential workarounds for this issue : 1. Run the following gcloud command to add a custom domain to your application: gcloud app domain-mappings create DOMAIN <https://cloud.google.com/sdk/gcloud/reference/app/domain-mappings/create> 2. Use the app.domainMappings.create <https://cloud.google.com/appengine/docs/admin-api/reference/rest/v1beta/apps.domainMappings/create> API method in the Admin API. You may find more information regarding this by reviewing step 4 of the following article <https://cloud.google.com/appengine/docs/standard/python/mapping-custom-domains#adding_a_custom_domain_for_your_application> . However, if the aforementioned workarounds didn’t help you to resolve the issue please open a private issue on Issue Tracker <https://issuetracker.google.com/issues/new?component=491299&template=1161102> with providing the output of gcloud command mentioned above with the verbosity flag <https://cloud.google.com/sdk/gcloud/reference/#--verbosity> set to DEBUG as this will help us to narrow down and inspect the issue further. Thanks for your understanding. On Wednesday, January 9, 2019 at 9:15:34 AM UTC-5, Bradley J. Gibby wrote: > > > Hi all, > > I've been trying to add a custom domain to my App Engine project and I > have been getting the following error for the last 24 hours. > > Anyone know what's going on with the Custom Domain's for App Engine? > -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to google-appengine+unsubscr...@googlegroups.com. To post to this group, send email to google-appengine@googlegroups.com. Visit this group at https://groups.google.com/group/google-appengine. To view this discussion on the web visit https://groups.google.com/d/msgid/google-appengine/755c323e-d9d7-47e3-b6fd-11f0846baabb%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.