Common Issues
Gazebo Issues
1. PID reading error
[ERROR] [1617369469.665635903, 0.160000000]: No p gain specified for pid. Namespace: /jetbot_0/gazebo_ros_control/pid_gains/lt_wheel_joint
[ERROR] [1617369469.666604764, 0.160000000]: No p gain specified for pid. Namespace: /jetbot_0/gazebo_ros_control/pid_gains/rt_wheel_joint
[wait for solution]
2. Jetbot not moving in Gazebo during the training
[wait for solution]
Training Issues
1. Training failed after change the parameter
2021-04-02 13:58:20.484572: I tensorflow/core/platform/profile_utils/cpu_utils.cc:112] CPU Frequency: 2900010000 Hz
/usr/local/lib/python3.8/dist-packages/numpy/core/fromnumeric.py:3372: RuntimeWarning: Mean of empty slice.
return _methods._mean(a, axis=axis, dtype=dtype,
/usr/local/lib/python3.8/dist-packages/numpy/core/_methods.py:170: RuntimeWarning: invalid value encountered in double_scalars
ret = ret.dtype.type(ret / rcount)
Solution:
- Close Gazebo and other rqt windows
- Delete
saved_model
Server Issues
1. Gazebo come up with a problem while rqt runs fine.
libGL error: No matching fbConfigs or visuals found
libGL error: failed to load driver: swrast
[wait for solution]