Issue
When I try to download sources of a library class pulled by Maven I receive error in Intellij IDEA:
java.rmi.ConnectException: Connection refused to host: 127.0.0.1
Solution
UPD (from @Andrey): This might have been fixed in version 2021.1.3
For older versions:
This can be fixed by selecting a proper JDK in your project's Maven Importer setting.
In the project setting go to Build Tools -> Maven -> Importing
Set JDK for importer to the JDK installed on your OS (Not the built-in one)
Try to download sources again - should be working now.
Answered By - Reynard