JVM cannot be restarted about pbrcontrol HOT 7 CLOSED

/home/pi/.local/lib/python3.5/site-packages/jpype/_core.py:210: UserWarning:
-------------------------------------------------------------------------------
Deprecated: convertStrings was not specified when starting the JVM. The default
behavior in JPype will be False starting in JPype 0.8. The recommended setting
for new code is convertStrings=False.  The legacy value of True was assumed for
this session. If you are a user of an application that reported this warning,
please file a ticket with the developer.
-------------------------------------------------------------------------------
  """)
Exception in thread 19PBRPBR19-checker:
Traceback (most recent call last):
  File "/usr/lib/python3.5/threading.py", line 914, in _bootstrap_inner
    self.run()
  File "/home/pi/PBRcontrol/DataManager/executioner.py", line 52, in run
    device = interpreter.DeviceManager(*arguments)  # initiate the physical device and its interpreter
  File "/home/pi/PBRcontrol/DataManager/interpreterPBR.py", line 48, in __init__
    super(DeviceManager, self).__init__(device_details, device_class, log)
  File "/home/pi/PBRcontrol/DataManager/base_interpreter.py", line 17, in __init__
    self.device = device_class(*args)
  File "/home/pi/PBRcontrol/HWdevices/PSI_java/PBR.py", line 7, in __init__
    super(PBR, self).__init__(ID, address, "/home/pi/PBRcontrol/HWdevices/PSI_java/lib/config/device_PBR.config")
  File "/home/pi/PBRcontrol/HWdevices/PSI_java/Device.py", line 16, in __init__
    self.device = self.connect(device_config)
  File "/home/pi/PBRcontrol/HWdevices/PSI_java/Device.py", line 19, in connect
    CommanderConnector = jpype.JClass("psi.bioreactor.commander.CommanderConnector")
  File "/home/pi/.local/lib/python3.5/site-packages/jpype/_jclass.py", line 130, in __new__
    return _JClassNew(args[0], **kwargs)
  File "/home/pi/.local/lib/python3.5/site-packages/jpype/_jclass.py", line 213, in _JClassNew
    javaClass = _jpype.PyJPClass(arg)
jpype._jclass.java.lang.NoClassDefFoundError: psi/bioreactor/commander/CommanderConnector