Your site is up-and-running once again. The issue <https://status.cloud.google.com/incident/cloud-sql/18003> has been addressed meanwhile: *"The issue with Cloud SQL First Generation instance unavailability has been resolved for all affected projects as of Thursday, 2018-08-16 10:38 US/Pacific. We will conduct an internal investigation of this issue and make appropriate improvements to our systems to help prevent or minimize future recurrence".*
It is difficult to decide after fact if the log entry you mention is related to the above issue. -- 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 [email protected]. To post to this group, send email to [email protected]. 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/43360aa6-aeca-4d58-8fac-c490ae77f32e%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
