edu.wpi.first.wpiutil.RuntimeLoader Not Found

Technical Programming
, ,
#1

Robot code says that it successfully deploys however FRCDriverStation says otherwise.
WPILib roboRIO debug output:

  • ********** Robot program starting **********

  • Unhandled exception: java.lang.ClassNotFoundException: edu.wpi.first.wpiutil.RuntimeLoader

  • Error at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(Unknown Source): Unhandled exception: java.lang.ClassNotFoundException: edu.wpi.first.wpiutil.RuntimeLoader

  • at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(Unknown Source)

  • at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(Unknown Source)

  • at java.base/java.lang.ClassLoader.loadClass(Unknown Source)

  • at com.revrobotics.jni.RevJNIWrapper.(RevJNIWrapper.java:42)

  • at com.revrobotics.CANSparkMaxLowLevel.(CANSparkMaxLowLevel.java:38)

  • at frc.robot.subsystems.SwerveModule.(SwerveModule.java:81)

  • at frc.robot.subsystems.Drivetrain.(Drivetrain.java:32)

  • at frc.robot.RobotContainer.(RobotContainer.java:25)

  • at frc.robot.Robot.robotInit(Robot.java:13)

  • at edu.wpi.first.wpilibj.TimedRobot.startCompetition(TimedRobot.java:107)

  • at edu.wpi.first.wpilibj.RobotBase.runRobot(RobotBase.java:373)

  • at edu.wpi.first.wpilibj.RobotBase.startRobot(RobotBase.java:463)

  • at frc.robot.Main.main(Main.java:19)

  • The robot program quit unexpectedly. This is usually due to a code error.
    The above stacktrace can help determine where the error occurred.
    See https://wpilib.org/stacktrace for more information.

  • Warning at edu.wpi.first.wpilibj.RobotBase.runRobot(RobotBase.java:388): The robot program quit unexpectedly. This is usually due to a code error.

  • The above stacktrace can help determine where the error occurred.

  • See https://wpilib.org/stacktrace for more information.

  • The startCompetition() method (or methods called by it) should have handled the exception above.

  • Error at edu.wpi.first.wpilibj.RobotBase.runRobot(RobotBase.java:395): The startCompetition() method (or methods called by it) should have handled the exception above.

  • Listening for transport dt_socket at address: 8349

ClassNotFoundException thrown from RevLib
#2

What does the WPILib “open project information” in vscode report for all the versions? Most likely the Rev vendor library is out of date.

#3

REVRobotics version is 1.5.4

#4

You need to remove that and install REVLib 2022. REVLib Information - SPARK MAX

#5

This topic was automatically closed 365 days after the last reply. New replies are no longer allowed.