Resource Already Allocated Error Mystery

[JLuna]

Hey folks,
I’m an alumni programmer trying to help my team out with a weird error. Essentially, a Resource Already Allocated error is being thrown on a declaration of a DigitalInput (limit switch). Normally, this means there’s a duplicated port number somewhere, but we’ve tried swapping ports, and we’ve looked through pretty much the entire codebase without finding duplicates. We’re pretty stuck. Here’s a github link:

TechStorm2523/2020RobotCode

And here’s the error:

ERROR  1  Could not instantiate robot edu.wpi.first.hal.DIOJNI!  edu.wpi.first.wpilibj.RobotBase.runRobot(RobotBase.java:245) 
ERROR  1  Unhandled exception instantiating robot edu.wpi.first.hal.DIOJNI edu.wpi.first.hal.util.UncleanStatusException: Code: -1029. HAL: Resource already allocated  frc.robot.subsystems.HoodPosition.(HoodPosition.java:23)

Any help at all would be appreciated! I fully expect we’re missing something silly. Thanks!

[GeeTwo]

You have
public static HoodPosition m_hPosition = new HoodPosition();
in Robot.java, and
private final HoodPosition m_hoodPosition = new HoodPosition();
in RobotContainer.java. I’d keep only one of these.

It looks like you’re doing similar with several subsystems.