Error Message on Estimote Beacon Position Data Generation

Our team is working on an indoor navigation project using Estimote UWB beacons. So far we mapped the room with 4 UWB beacons and finished setting up catkin workspace on our Raspberry pi 3. We were able to run all the commends as stated on these two following tutorials but we got an error message when running the last line of code. ​

$ rosrun estimote_robotics_indoor_sdk