Towards the bottom left of the Build interface you'll notice a small bell icon. This is the Problem Scanner, which will alert you to potential problems in your project, such as lack of database connections or git configuration.
Below is a screenshot of the scanner on a fresh account where nothing has been configured yet. Depending on what you're trying to do, you may be able to ignore some of its warnings. For example if you're not planning to use the git integration yet, you could safely ignore the relevant warning.
On Different Workspaces
Note that the problem scanner will only show problems with the development workspace currently in use, not for the other development workspaces.
Updated about 1 month ago