You have an Ad Hoc report that is timing out. It is using an out of the box domain, for example Project Management
Release : 16.1.2, 16.1.3
Postgres / GCP
The query is timing out due to a large join/merge.
Try to reduce the amount of data being returned by using a filter.
Alternatively, there may be parameters on the database that support can take a look at by opening a support case.