Modbus Error: [Connection] Failed to connect[ModbusSerialClient(rtu baud[115200])]

[kmbashayan]

whenever I try to connect the gello with the UR5e arm, I run into this error:
in ur robot
in ur robot
in ur robot
in ur robot
Unable to connect to /tmp/ttyUR
Traceback (most recent call last):
File "/home/kholoudbashayan/GitHub/gello_software/gello/robots/robotiq_gripper.py", line 75, in sendCommand
self.client.write_registers(0x03E8, message, unit=0x0009)
File "/home/kholoudbashayan/miniconda3/envs/gello/lib/python3.8/site-packages/pymodbus/client/common.py", line 103, in write_registers
return self.execute(request)
File "/home/kholoudbashayan/miniconda3/envs/gello/lib/python3.8/site-packages/pymodbus/client/sync.py", line 105, in execute
raise ConnectionException("Failed to connect[%s]" % (self.str()))
pymodbus.exceptions.ConnectionException: Modbus Error: [Connection] Failed to connect[ModbusSerialClient(rtu baud[115200])]

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "experiments/launch_nodes.py", line 94, in
main(tyro.cli(Args))
File "experiments/launch_nodes.py", line 90, in main
launch_robot_server(args)
File "experiments/launch_nodes.py", line 65, in launch_robot_server
robot = URRobot(robot_ip=args.robot_ip, no_gripper=args.no_gripper)
File "/home/kholoudbashayan/GitHub/gello_software/gello/robots/ur.py", line 30, in init
self.gripper.connect(device="/tmp/ttyUR")
File "/home/kholoudbashayan/GitHub/gello_software/gello/robots/robotiq_gripper.py", line 263, in connect
self._reset()
File "/home/kholoudbashayan/GitHub/gello_software/gello/robots/robotiq_gripper.py", line 369, in _reset
self.gripper.sendCommand()
File "/home/kholoudbashayan/GitHub/gello_software/gello/robots/robotiq_gripper.py", line 169, in sendCommand
self.client.sendCommand(self.message)
File "/home/kholoudbashayan/GitHub/gello_software/gello/robots/robotiq_gripper.py", line 77, in sendCommand
raise WriteGripperError("Failed to write to registers of gripper")
gello.robots.robotiq_gripper.WriteGripperError: Failed to write to registers of gripper

[wuphilipp]

Humm I'm not sure about this exact issue. As i have not worked directly with the UR5e robotics.
Are you able to run the robotiq_gripper.py as a stand alone script to control just the gripper?