We've had a one UR5e fail with a C450C4 Error about a missing Force-Torque sensor in the last week. Tried to restart the robot with no effect. We upgraded the robot to 5.11 with no changes. All connections have ben cheeked. Note: The robot is equipped with Robotiq 2F-85 & Wrist Camera. There is no FT 300-S Force Torque Sensor in this robot!! The robot was turned off for more than 9 months, and the system was fully functional before shutting down it. Any suggestions pleas to fix this issue?