Getting error in test, when running `mvn clean install`

[rt266]

Tests in error:
testCorrectSlotNumberForNonExistingRegistrationNumber(com.uditagarwal.commands.SlotForRegNumberCommandExecutorTest)
testInvalidCommand(com.uditagarwal.commands.SlotForRegNumberCommandExecutorTest): Could not initialize class org.mockito.internal.creation.cglib.ClassImposterizer$3
testCorrectSlotNumberForValidRegistrationNumber(com.uditagarwal.commands.SlotForRegNumberCommandExecutorTest): Could not initialize class org.mockito.internal.creation.cglib.ClassImposterizer$3
testValidCommand(com.uditagarwal.commands.SlotForRegNumberCommandExecutorTest): Could not initialize class org.mockito.internal.creation.cglib.ClassImposterizer$3
testCarsWithAColor(com.uditagarwal.commands.ColorToRegNumberCommandExecutorTest): Could not initialize class org.mockito.internal.creation.cglib.ClassImposterizer$3
testInvalidCommand(com.uditagarwal.commands.ColorToRegNumberCommandExecutorTest): Could not initialize class org.mockito.internal.creation.cglib.ClassImposterizer$3
testValidCommand(com.uditagarwal.commands.ColorToRegNumberCommandExecutorTest): Could not initialize class org.mockito.internal.creation.cglib.ClassImposterizer$3
testWhenNoCarsFoundWithAColor(com.uditagarwal.commands.ColorToRegNumberCommandExecutorTest): Could not initialize class org.mockito.internal.creation.cglib.ClassImposterizer$3
testCommandExecutionWhenParkingSucceeds(com.uditagarwal.commands.ParkCommandExecutorTest): Could not initialize class org.mockito.internal.creation.cglib.ClassImposterizer$3