Tag Archives: Robot operating system

ROS Error: Could not import “pyqt“ bindings of qt_gui_cpp library

Error log
using ROS rqt visualization:

Could not import "pyqt" bindings of qt_gui_cpp library

The reason for the error
may be that the pyqt version is older or not installed.

pip install pydot pyqt5

Problem solving

Error log

Gazebo[Err][REST.cc:205] Error in REST request

Problem-solving

nano ~/.ignition/fuel/config.yaml
# Modify url: https://api.ignitionrobotics.org

Error log

ERROR: cannot launch node of type [octomap_server/octomap_server_node]: octomap_server
ROS path [0]=/opt/ros/melodic/share/ros

Error reason
this error message says that the node cannot be opened because there is no octomap_ Server type

The problem is that either the path cannot find the octomap server, or the octpmap server is not installed at all

Solution:

sudo apt install ros-melodic-octomap
sudo apt install ros-melodic-octomap-server

Problem solving