After migrating a cube to a new environment, users may find that their cube can't be run or edited. Instead, the following error appears:
"Create XXX Report Instance error. Please check the metadata. The object does not exist in the metadata."




The cube fails to run because the database instance was not migrated. As a result, the database instance the cube was using in the source environment is not present in the destination environment.
This can be confirmed in Developer:

This can also be confirmed if you try to open the Object Manager package in the new environment. You will see that the database instance does not appear.

To successfully run and edit your cube, you must migrate the database instance from the source environment to the new environment.