It happens often with current stable version of (Community) IDEA (2021.1.2) and Scala plugin (2021.1.21) that I make changes under Windows on an sbt file (sbt version 1.5.3 for example), IDEA shows that it needs to import, but it fails with:
Extracting structure failed, reason: not ok build status: Error (BuildMessages(Vector(),Vector(),Vector(),Vector(),Error))
The sbt files are correct (also the error message is not very helpful). I also have sbt shell running, though it is not executing anything.
Here is the sbt related configuration of IDEA (Build, Execution, Deployment | Build Tools | sbt):

